Pathology CPC: Flank Pain & Haematuria

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Questions and Answers

A 65-year-old male presents with left flank pain for 4 months and a palpable left-sided abdominal mass. Which of the following is the MOST likely differential diagnosis to exclude first?

  • Renal Mass (correct)
  • Ureteric Mass
  • Splenomegaly
  • Adrenal Mass

A 65-year-old male presents with left flank pain for 4 months and a palpable left-sided abdominal mass. His lab results show elevated hemoglobin (Hb) at 17 g/dL and C-reactive protein (CRP) at 40. White cell count (WCC) is normal. What does an elevated CRP indicate?

  • The patient is likely experiencing a paraneoplastic syndrome.
  • It is a specific indicator of renal cell carcinoma.
  • It indicates a systemic inflammatory response, which could be due to the tumor or another cause. (correct)
  • The patient has a chronic bacterial infection of the kidney.

Following an ultrasound that reveals an 8cm mass on the left kidney of a 65 year old male, which of the following would be the MOST appropriate next step in diagnosis?

  • CT scan of the abdomen with contrast (correct)
  • Referral for immediate nephrectomy
  • Percutaneous biopsy of the mass
  • Angiography of the renal vessels

A CT scan reveals a hypodense mass in the left kidney. In which of the following scenarios would a biopsy be MOST necessary to help direct management?

<p>The patient has a solitary kidney. (D)</p> Signup and view all the answers

Which of the following is LEAST likely in the differential diagnosis of a renal mass?

<p>Transitional Cell Carcinoma (C)</p> Signup and view all the answers

Which of the following is the MOST common type of renal parenchymal carcinoma?

<p>Clear cell carcinoma (D)</p> Signup and view all the answers

A patient is diagnosed with clear cell renal carcinoma. Which genetic syndrome is MOST closely associated with an increased risk of developing this cancer?

<p>Von Hippel-Lindau syndrome (D)</p> Signup and view all the answers

What is the typical first-line treatment for localized renal parenchymal cell carcinoma?

<p>Nephrectomy (C)</p> Signup and view all the answers

From which cells does renal parenchymal cell carcinoma arise?

<p>Renal tubules (D)</p> Signup and view all the answers

Which finding would indicate a POOR prognosis in renal cell carcinoma?

<p>Tumor involving the renal vein (D)</p> Signup and view all the answers

Polycythemia is a paraneoplastic syndrome sometimes caused by renal carcinoma. What is the underlying mechanism?

<p>Ectopic erythropoietin production (C)</p> Signup and view all the answers

A 56-year-old male presents with hematuria on two occasions. Which of the following classifications is used to categorize potential causes of hematuria?

<p>Renal, Post-renal, General/Systemic (A)</p> Signup and view all the answers

A 56-year-old male presents with hematuria. Which of the following renal conditions should be included in the differential diagnosis?

<p>Glomerulonephritis (D)</p> Signup and view all the answers

Which non-renal cause is LEAST likely to be associated with hematuria?

<p>Benign Prostatic Hyperplasia (A)</p> Signup and view all the answers

A 56-year-old male presents with hematuria. Initial investigations should follow a logical classification. What is the correct logical order for hematuria investigations?

<p>Laboratory, Diagnostic imaging, Organ and site specific (B)</p> Signup and view all the answers

A cystoscopy reveals a papillary tumor in the bladder. When comparing malignant and benign bladder tumours, which statement is CORRECT?

<p>Malignant tumors are more common than benign tumors. (A)</p> Signup and view all the answers

Which of the following is the MOST common type of bladder carcinoma?

<p>Urothelial carcinoma (B)</p> Signup and view all the answers

A patient is diagnosed with squamous cell carcinoma of the bladder. Which of the following risk factors is MOST strongly associated with this type of bladder cancer?

<p>Chronic Schistosomiasis infection (A)</p> Signup and view all the answers

Which of the following is NOT a typical symptom of bladder carcinoma?

<p>Weight loss (B)</p> Signup and view all the answers

What is the MOST important factor in determining the prognosis of bladder carcinoma?

<p>Depth of invasion (A)</p> Signup and view all the answers

A patient is diagnosed with high-grade urothelial carcinoma in situ of the bladder. What is the MOST appropriate initial management?

<p>Intravesical BCG (A)</p> Signup and view all the answers

Which occupational exposure is a well-known risk factor for bladder cancer?

<p>Aniline dyes (D)</p> Signup and view all the answers

A patient presents with macroscopic hematuria. Which of the following statements regarding hematuria is MOST accurate?

<p>The source could be anywhere from the kidney to the urethra. (D)</p> Signup and view all the answers

A 43-year-old male presents with severe colicky left loin pain of sudden onset. Which of the following initial differential diagnoses is the MOST probable?

<p>Renal Colic (B)</p> Signup and view all the answers

What is the BEST single initial test to confirm a case of renal colic?

<p>Urinalysis (A)</p> Signup and view all the answers

Calcium oxalate stones are the most common type of urinary stone. Which of the following is the LEAST likely cause of them?

<p>Decreased calcium intake (D)</p> Signup and view all the answers

Proteus mirabilis increases the risk of triple stones (struvite) due to its production of urease. What effect does this have on urine?

<p>Alkaline (B)</p> Signup and view all the answers

Uric acid stones are radiolucent. What can cause them?

<p>Gout (A)</p> Signup and view all the answers

A patient with a history of recurrent kidney stones and UTIs presents with a new kidney stone. Which is the MOST likely complication if left untreated?

<p>Pyelonephritis (C)</p> Signup and view all the answers

Stricture of the ureter is a serious complication of untreated kidney stones. What is the MOST concerning consequence of ureteral stricture?

<p>Chronic kidney disease (C)</p> Signup and view all the answers

Which of the following is the MOST important learning outcome related to renal cell carcinoma?

<p>Summarize the clinical and pathological features of renal cell carcinoma (C)</p> Signup and view all the answers

A 65-year-old male with a history of smoking presents with left flank pain and hematuria for the past month. An abdominal CT scan reveals a 7 cm solid mass in the left kidney. Lab results show hypercalcemia. What is the MOST likely cause of hypercalcemia in this patient?

<p>The tumor is producing a parathyroid hormone-related protein (PTHrP). (C)</p> Signup and view all the answers

A 60-year-old male presents with painless hematuria. Cystoscopy reveals a high-grade urothelial carcinoma of the bladder that has invaded into the muscle layer. What is the MOST appropriate next step in the management of this patient?

<p>Radical cystectomy (A)</p> Signup and view all the answers

A 35-year-old male presents with left flank pain radiating to the groin, along with nausea and vomiting. A urinalysis shows microscopic hematuria. A non-contrast CT scan reveals a 6 mm stone in the left ureter. What is the BEST initial approach to manage this patient?

<p>Observation with pain management and alpha-blockers (A)</p> Signup and view all the answers

A 50-year-old male presents with hematuria and is found to have a bladder mass. Biopsy confirms urothelial carcinoma. Further staging reveals the tumor has spread to the perivesical fat, indicating it is at least stage T3. What does the 'T' in the TNM bladder cancer staging system refer to?

<p>Extent of local invasion (A)</p> Signup and view all the answers

A 45-year-old female presents with sudden onset of severe right flank pain, hematuria, and nausea. She has no prior medical history. Urinalysis shows red blood cells and a few white blood cells. What is the MOST likely underlying cause?

<p>Kidney stone (C)</p> Signup and view all the answers

Following a diagnosis of high-grade bladder cancer, a patient undergoes radical cystectomy. Post-operatively, which of the following long-term complications is MOST likely?

<p>Sexual dysfunction (A)</p> Signup and view all the answers

A 60-year-old with schistosomiasis presents with haematuria. What kind of bladder cancer is MOST likely?

<p>Squamous Cell (C)</p> Signup and view all the answers

When would a partial nephrectomy be considered for the removal of a renal cortical tumour?

<p>Wherever possible if suitable (D)</p> Signup and view all the answers

Which of these is not an example of presentation or paraneoplastic effect of renal cell carcinoma?

<p>Fever (C)</p> Signup and view all the answers

Which of the following are learning outcomes related to renal calculi?

<p>Classify renal Calculi (D)</p> Signup and view all the answers

A 65-year-old male presents with left flank pain and an abdominal mass. If an adrenal mass is suspected, which of the following features would be MOST suggestive of a malignant etiology rather than a benign one?

<p>Rapid growth rate on serial imaging studies (A)</p> Signup and view all the answers

A 65 year old male has a hypodense mass in his left kidney. If a biopsy is performed, which of the following is the MOST significant risk associated with renal mass biopsy that clinicians must consider?

<p>Seeding of the tumor along the biopsy tract (A)</p> Signup and view all the answers

A 65-year-old male is diagnosed with a renal mass. Which of the following inherent limitations of imaging modalities makes a definitive diagnosis challenging without tissue sampling?

<p>Inability to differentiate benign from malignant lesions based on radiological characteristics alone (A)</p> Signup and view all the answers

What is the underlying genetic mechanism MOST commonly associated with the development of clear cell renal carcinoma?

<p>Inactivation of the VHL gene (D)</p> Signup and view all the answers

Which of the following molecular mechanisms is implicated in the pathogenesis of papillary renal cell carcinoma?

<p>Activation of the MET oncogene (C)</p> Signup and view all the answers

After nephrectomy for localized renal cell carcinoma, a patient develops a solitary brain metastasis 3 years later. Which of the following is the MOST appropriate management strategy?

<p>Stereotactic radiosurgery or surgical resection (C)</p> Signup and view all the answers

What is the MOST likely cell type of origin for renal cell carcinoma?

<p>Proximal tubular epithelial cells (D)</p> Signup and view all the answers

Which pathological feature is MOST indicative of aggressive behavior in clear cell renal cell carcinoma?

<p>Sarcomatoid differentiation (D)</p> Signup and view all the answers

A patient with renal cell carcinoma develops hypercalcemia. Which of the following is the MOST likely mechanism contributing to this paraneoplastic syndrome?

<p>Secretion of parathyroid hormone-related protein (PTHrP) (C)</p> Signup and view all the answers

Aside from malignancy, what other renal cause is most commonly associated with haematuria?

<p>IgA nephropathy (B)</p> Signup and view all the answers

A 56-year-old male presents with hematuria and a history of smoking. After initial investigations, a bladder mass is suspected. Which of the following is MOST crucial in determining the stage and guiding the management of bladder cancer?

<p>The depth of tumor invasion into the bladder wall (A)</p> Signup and view all the answers

A patient undergoes transurethral resection of a bladder tumor (TURBT) and is found to have high-grade urothelial carcinoma. What adjunctive treatment strategy is MOST commonly employed to reduce the risk of recurrence and progression?

<p>Intravesical instillation of Bacillus Calmette-Guérin (BCG) (B)</p> Signup and view all the answers

A patient with bladder cancer is being considered for radical cystectomy. Which of the following factors would be MOST influential in deciding whether to construct an orthotopic neobladder versus an ileal conduit urinary diversion?

<p>Patient's renal function and bowel function (C)</p> Signup and view all the answers

A 56-year-old male presents with gross hematuria. Which finding on cystoscopy would MOST strongly suggest a urothelial carcinoma in situ rather than an invasive papillary tumor?

<p>Multiple erythematous, velvety patches (A)</p> Signup and view all the answers

Which of the following genetic mutations is MOST closely associated with urothelial carcinoma?

<p>FGFR3 (A)</p> Signup and view all the answers

Which of the following is MOST important when considering the aetiology of bladder cancer?

<p>Exposure to industrial dyes and chemicals (C)</p> Signup and view all the answers

A 43-year-old male presents with acute renal colic secondary to a 6mm distal ureteral stone. He has moderate pain despite oral analgesics and is unable to tolerate oral fluids. What is the MOST appropriate next step in management?

<p>Administration of intravenous opioids and observation (C)</p> Signup and view all the answers

Following initial management of a ureteric stone, what is the MOST appropriate imaging modality to monitor stone passage and assess for complications such as hydronephrosis?

<p>Ultrasound of the kidneys and bladder (C)</p> Signup and view all the answers

A patient with a history of recurrent calcium oxalate stones is found to have hypercalciuria with normal serum calcium levels. Which of the following is thought to be the MOST likely underlying cause of this condition?

<p>Defect in renal tubular reabsorption of calcium (A)</p> Signup and view all the answers

What distinguishes the mechanism of formation in triple stones (struvite) from other urinary stones?

<p>Formation is enhanced by alkaline urinary conditions (B)</p> Signup and view all the answers

A patient is diagnosed with uric acid stones. Which dietary modification would be MOST appropriate in preventing recurrence?

<p>Decrease intake of purine-rich foods (D)</p> Signup and view all the answers

A patient with recurrent urinary tract infections (UTIs) and a large staghorn calculus is MOST at risk of developing which of the following long-term complications if the stone is left untreated?

<p>Chronic kidney disease and renal failure (A)</p> Signup and view all the answers

A patient develops a ureteral stricture secondary to chronic impaction from a large kidney stone. What is the MOST significant long-term consequence of an untreated ureteral stricture?

<p>End-stage renal disease (D)</p> Signup and view all the answers

A 65-year-old smoker presents with hematuria and weight loss. CT imaging reveals a 6 cm renal mass with regional lymph node involvement. What is the MOST likely stage of the renal cell carcinoma based on the TNM staging system?

<p>T3aN1M0 (A)</p> Signup and view all the answers

A 60-year-old patient with a history of chronic analgesic abuse presents with painless hematuria. Cystoscopy reveals a bladder tumor. Biopsy confirms squamous cell carcinoma. Which of the following predisposing factors is MOST directly associated with this specific type of bladder cancer?

<p>Chronic bladder irritation and inflammation (B)</p> Signup and view all the answers

When considering a partial nephrectomy for a renal cortical tumor, which of the following factors is MOST critical in determining patient selection?

<p>Adequate residual renal function and absence of complex anatomical features (A)</p> Signup and view all the answers

Following radical cystectomy and ileal conduit diversion, which of the following long-term metabolic complications is MOST likely to occur and require ongoing management?

<p>Hyperchloremic metabolic acidosis (C)</p> Signup and view all the answers

A 45-year-old female with a history of recurrent UTIs presents with a large staghorn calculus. She undergoes percutaneous nephrolithotomy (PCNL) for stone removal. Postoperatively, which complication is MOST concerning and requires immediate intervention ?

<p>Fever and flank pain (A)</p> Signup and view all the answers

A 40-year-old male presents with hematuria and is found to have a 3 cm papillary bladder tumor. Transurethral resection confirms high-grade urothelial carcinoma that invades the lamina propria (T1). Molecular analysis reveals overexpression of FGFR3. What is the MOST relevant implication of this finding?

<p>Suggests potential sensitivity to FGFR3-targeted therapies in cases of advanced disease (C)</p> Signup and view all the answers

A 55-year-old male presents with hematuria and is diagnosed with invasive bladder cancer. Staging indicates the tumor has extended through the bladder wall and into the perivesical fat (T3N0M0). Which adjuvant therapy is MOST likely to improve overall survival following radical cystectomy?

<p>Adjuvant chemotherapy with cisplatin-based regimen (B)</p> Signup and view all the answers

A 30-year-old male presents with a renal mass discovered incidentally on imaging for unrelated symptoms. The mass is small (2 cm), well-defined, and located in the lower pole of the kidney. He has a strong family history of renal cell carcinoma. Which approach is the MOST appropriate?

<p>Partial nephrectomy (B)</p> Signup and view all the answers

Flashcards

Flank Pain

Pain in the side of the body, specifically the area between the abdomen and back, often associated with the kidneys.

Haematuria

The presence of blood in the urine.

Differentials for Flank Pain

Renal Mass, Colonic Mass, Adrenal Mass, Ureteric Mass, Splenomegaly

Differential Diagnosis for Kidney Mass

Benign or Malignant, Primary or Secondary Tumors, Abscess

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Renal Tumour Likelihood

Most likely renal tumor in older patients.

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Initial Kidney Imaging

Ultrasound of the abdomen is typically the first imaging test to evaluate the kidneys.

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Further Kidney Investigation

A CT scan provides more detailed views of the kidney and is used to confirm initial ultrasound findings.

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Differentials for Kidney Mass

These renal masses can be carcinomas, sarcomas, lymphomas, metastasis, or abscesses.

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Etiology of Renal Cell Carcinoma

Von Hippel-Lindau Syndrome, Polycystic Kidney Disease, Smoking

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Treatment of Renal Parenchyma Cell Carcinoma

Remove kidney tumor and nearby tissue and use chemotherapy if needed.

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Cell of origin of renal parenchymal cell carcinoma?

Renal tubule cells are the cells of origin.

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Renal cell carcinoma prognosis factors.

Based on stage, grade, and type.

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Paraneoplastic Effects of Renal Carcinoma

Renal cell carcinoma can cause polycythemia, hypercalcemia, and hypertension.

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Symptoms of Renal Cancer

Flank pain and haematuria along with a palpable abdominal mass.

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Causes of Haematuria

Renal, Post-renal, and Systemic/General.

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Renal Causes of Haematuria

Tumour, glomerulonephritis, calculi, pyelonephritis, trauma, infarction.

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Non-Renal Causes of Haematuria

Urinary tract tumours, stones, infections, anticoagulant treatment.

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Haematuria Investigations

Laboratory tests, Diagnostic imaging, Organ and site specific investigations.

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Haematuria Diagnostics

Ultrasound, cystoscopy, IVP (less common).

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Cystoscopy Showed

Involves a papillary tumour

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Bladder Tumours

Malignant bladder tumours are frequently present in papillary form.

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Types of Bladder Carcinoma

Urothelial, squamous cell, adenocarcinoma

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Other Bladder Neoplasms

Sarcoma and lymphoma

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Primary Bladder Carcinoma Symptoms

Haematuria, dysuria and urgency

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Prognosis of Bladder Carcinoma

Classified by grade, tumor type, and stage.

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Management of Urothelial

Excision + Chemotherapy

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Aetiology of Bladder Cancer

Involves Smoking, Aniline Dye, Stones, Infection, Schistosomiasis

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Haematuria

Associated with many factors.

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Renal Colic

A urinary tract obstruction that causes colicky pain in the loin, and flank.

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Differential Diagnosis of Loin Pain

Renal Colic, GIT obstruction, Gallstone colic.

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Urinalysis Role

Urinalysis looks for blood and is part of a routine clinical examination.

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Types of Urinary Stones

Calcium Oxalate = 80% of cases, less commonly triple, uric acid, or cystinuria.

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Causes of Urinary Stones

Hypercalcaemia, increased PTH, issues re-absorbing calcium.

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other Causes of Renal Colic

Tumour or a blood clot

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Study Notes

Pathology CPC

  • Pathology CPC is being discussed
  • Two main symptoms are Flank pain and Haematuria

Case A: Male 65

  • A 65-year-old male has left flank pain for 4 months
  • The pain has no radiation
  • The patient has no Sick Report (S/R) and was previously well
  • On examination, there is a left sided abdominal mass

Differential Diagnosis of Flank Pain

  • Renal Mass, benign, malignant or abscess
  • Colonic Mass
  • Adrenal Mass
  • Ureteric Mass
  • Splenomegaly

Laboratory Investigations

  • Haemoglobin (Hb) is 17 g/dL
  • C-reactive protein (CRP) is 40
  • White cell count (WCC) is normal

Other Investigations

  • The classification of investigations is on Moodle
  • Other investigations include lab work, diagnostic imaging, and site specific investigations
  • Ultrasound and CT scans of the abdomen are relevant

Ultrasound Results

  • Ultrasound shows an 8cm mass on the left kidney
  • The mass is described as iso- to hypoechoic and arises from the lower pole of the kidney

Differential Diagnosis

  • Mass identified on the kidney could be a Tumor or an Abscess
  • Tumors can be classified as either Benign or Malignant
    • Malignant tumors can be Primary or Secondary
    • Primary tumors include Carcinoma, Sarcoma and Lymphoma
    • Secondary tumors include Carcinoma, Sarcoma, Melanoma, or Other

Renal Tumors

  • A renal cell tumor is the most likely diagnosis in this age group

Further Investigations

  • CT scans or Angiography are two further investigations

CT Scan

  • A hypodense mass is visible

Biopsy Considerations

  • A biopsy is usually unnecessary if CT features are pathognomonic
  • Biopsies may be done in a small number of instances if the patient has a solitary kidney or is suitable for partial Nephrectomy

Differential Dx Renal Mass

  • Differential diagnoses for a renal mass include renal cell carcinoma originating from kidney tubules or urothelium in the renal pelvis, lymphoma (B or T cell), sarcoma & metastasis
  • Benign tumors include Angiomyolipomas associated with Tuberous Sclerosis, Oncocytoma, and Adenoma

Types of Renal Parenchyma Carcinoma

  • Types of renal parenchyma Carcinoma include Clear cell, Papillary, Collecting duct, Chromosomal associated, and Chromophobe; clear cell is the most common

Aetiology of Renal Cell Carcinoma

  • Genetic conditions like Von Hippel Lindau Syndrome, chromosomal translocations, Polycystic Disease, cystic disease related to dialysis, and smoking can contribute to the development of renal cell carcinoma
  • More recently numerous other translocations identified

Treatment of Renal Parenchyma Cell Carcinoma

  • Treatment options are Nephrectomy and, in some cases, Chemotherapy

Other Types of Carcinoma

  • Urothelial carcinoma arises from the renal pelvis and is a more recent name for transitional cell Ca
  • Prognosis relies on Stage, Grade and Type

Prognosis for Renal Carcinoma

  • When confined to the kidney is 70% 5-year survival
  • If the renal vein is involved is 15% 5-year survival

Paraneoplastic Effects in Renal Carcinoma

  • Paraneoplastic effects sometimes seen in renal carcinoma are Polycythaemia, hypercalcaemia, hypertension, and Pyrexia of Unknown Origin (P.U.O.)

Summary

  • Presentation, aetiology, prognosis and management of renal carcinoma

Case B: Male 56

  • Overview of Haematuria
  • A 56 year old male presents with Haematuria on 2 occasions and is otherwise considered well

Differential of Haematuria

  • The differential of haematuria can be broken down into 3 categories; Renal, Post renal or General/systemic.

Renal Causes of Haematuria

  • Renal causes of Haematuria include Tumor – Benign/Malignant, Glomerulonephritis, Calculi, Pyelonephritis, Trauma & Infarction with tissue necrosis e.g. emboli
  • To think of renal causes Remember: glomeruli, tubules or pelvis of kidney

Non-Renal Causes of Haematuria

  • Non-Renal Causes include Tumour in the Urinary Tract in the Bladder, Ureter, Urethra
  • Specifically, Bladder causes of haematuria can be Urothelial, squamous cell or Adeno carcinoma, stones or an infection of Cystitis
  • Anticoagulant Treatment can also cause Haematuria

Investigations of Haematuria

  • The key investigations are the classification of investigations using the approach; Lab work, diagnostic imaging and organ & site specific testing

Investigations for Haematuria

  • Ultrasound on the kidney
  • Cystoscopy and Biopsy of bladder lesion if present
  • IVP (intravenous pyelogram) uncommonly used

Cystoscopy Results

  • A papillary tumour observed in the bladder
  • Benign and malignant tumors, benign < malignant tumors and that overall malignant tumors are far more common

Bladder Carcinoma Types

  • Urothelial Carcinoma (also called Transitional cell) , Squamous Ca with Schistosomiasis and calculi (metaplasia), Adenocarcinoma in urachal remnant, (Very rare) and colo/recto-vesical fistulae (also metaplasia) & Very occasional metastases

Other Bladder Neoplasms

  • Sarcoma, Lymphoma, and Rare

PC of Bladder Carcinomas

  • Symptoms and complications relating to Bladder Carcinomas include; Haematuria, Dysuria, Urgency, Hydro ureter due to obstruction of ureter - Hydronephrosis – due to obstruction of renal pelvis & Ureteric outflow obstruction

Bladder Carcinoma Prognosis

  • Type, Grade & Stage are factors
  • T refers to level of invasion through the bladder

Management of Urothelial/TCC Bladder

  • Excision of Ca if early or Radical cystectomy for muscle invasive carcinoma or Treatment of Carcinoma in Situ - BCG

Aetiology of Bladder Cancer

  • Smoking, Aniline Dye, Stones, Chronic inflammation, Schistosomiasis

Haematuria

  • Several causes
  • Could be from Kidney, Bladder, Ureter or Urethra
  • These need to be imaged to find the cause
  • Anticoagulation therapies eg. Warfarin and Heparin

Case C: Male 43

  • A 43 year old male who was previously well presents with severe colicky left loin pain over the last 2/7, which was also of very sudden onset & extremely severe

Differentials

  • Renal Colic is far most likely, GIT obstruction or maybe related to Gallstone colic

Single Test to Distinguish

  • Carrying out a Urinalysis for blood during the routine checks and examinations is key when GP Surgery, Bedside or in the department OPD

Types of Urinary Stones

  • Calcium Oxalate 80%
  • Triple (Staghorn, MG, Ammonium, 15% Phosphate)
  • Uric Acid
  • Cystinuria / Oxalosis

Urinary Stones Causes

  • In Calcium/Oxalate Stones which can cause Hypercalcaemia e.g. increased PTH leading to a defect in tubular re-absorption of calcium which is generally common
  • In Triple stones it's With UTI's due to Proteus breaking down urea and resulting Alkaline urine causing the precipitation of salts
  • Uric Acid Stones can feature Hyperuricaemia

Other Causes of Renal Colic

  • Tumour obstructing and or a Blood clot in ureter – trauma or glomerular causes of haematuria – rare

Complications of Urinary Stones

  • Obstructed ureter resulting Hydro ureter, Hydronephrosis and Pyelonephritis
  • Stricture of the Ureter and Recurrent stones can cause pyelonephritis

Learning Outcomes

  • Summarise the Clinical and the pathological features of renal cell carcinoma, listing the differentials and explaining prognosis with grade and stage
  • Classifying renal calculi

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