Tumors and Cancer Conditions Quiz

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Questions and Answers

What is a Pancoast tumor?

Tumor of the lung and chest wall (correct)

Tumor of the pancreas

Tumor of the stomach and small intestine

Renal tumor

What condition is suggested by the presence of fluid levels in the native abdomen?

Crohn's disease

Herniation

Appendicitis (correct)

Ileal control

What is Lerish syndrome associated with?

Thrombosis of the hepatic vein

Complete aortic occlusion (correct)

Pulmonary embolism

Obstruction of lymphatic vessels

Which method is the choice for examining tumors of the oral cavity, stomach, liver and prostate?

MR imaging Signup and view all the answers

How is primary hepatocellular carcinoma most commonly associated?

Is often found in cirrhotic liver Signup and view all the answers

What is one indication for performing arthrography?

Infections in or near a joint Signup and view all the answers

Which of the following is a disadvantage of panoramic radiography?

It takes a long time to produce the image Signup and view all the answers

Intraoral radiography using the bisecting angle technique is associated with which of the following?

Requirement for a longer exposure time Signup and view all the answers

What are the basic views used in intraoral radiography?

Periapical view, bitewing view, occlusal view Signup and view all the answers

Bitewing view radiographs are primarily used for what purpose?

Detecting interproximal caries Signup and view all the answers

Which statement about intraoral radiography is correct?

It is performed with film placed inside the oral cavity. Signup and view all the answers

Soft tissue changes revealed by arthrography may include what?

Inflammation of surrounding tissue Signup and view all the answers

Which technique is typically preferred for obtaining periapical images?

Paralleling technique Signup and view all the answers

Which imaging modalities are used for prenatal diagnosis?

USG, CT and MR examination Signup and view all the answers

What type of probe is used to examine abdominal organs?

Convex probe Signup and view all the answers

What are the characteristics of liver cysts?

Single, multiple, echinococcal Signup and view all the answers

In which examination is the patient not exposed to X-rays?

MR examination Signup and view all the answers

What does a Krukenberg’s tumor signify?

Ovarian tumor metastasizing to the colon, stomach and pancreas Signup and view all the answers

Which of the following is a form of acute pancreatitis?

Two forms: mild edematous and severe hemorrhagic-necrotic Signup and view all the answers

In the Seldinger method, where is the catheter introduced?

Vein femoralis Signup and view all the answers

Which disease of the TMJ is characterized by narrowing of the joint space and irregular joint space?

Degenerative joint disease Signup and view all the answers

Which statement about Barium sulfate suspension is incorrect?

It is administered intravenously Signup and view all the answers

Codman’s triangle is associated with which condition?

Destructive bone cancer Signup and view all the answers

Claudication pains are characterized as what type of pain?

Lower limb pain after exertion Signup and view all the answers

During contrast MR examination, which type of contrast agents are mainly used?

Gadolinium contrast agents Signup and view all the answers

Who discovered X-rays?

Wilhelm Conrad Röntgen Signup and view all the answers

A contraindication to CT angiography is which of the following?

Positive allergic history for iodine preparations Signup and view all the answers

To examine the abdominal organs, which type of probe is most suitable?

Convex probe Signup and view all the answers

What is the main indication for using occlusal projection in radiography?

To study maxillary and mandibular arches Signup and view all the answers

How does dental caries appear on radiographs?

As a radiolucent area Signup and view all the answers

Which statement about cervical burnout and dental caries is correct?

Cervical burnout can be mistaken for dental caries. Signup and view all the answers

What type of bone loss is associated with early periodontitis?

Horizontal bone loss Signup and view all the answers

Which feature indicates luxation of a tooth on a radiograph?

Widened periapical ligament space Signup and view all the answers

How does a dentigerous cyst appear radiographically?

As a well-defined radiopacity with a sclerotic border Signup and view all the answers

What is the typical radiographic appearance of an ameloblastoma of the mandible?

Multilocular cystlike lesion Signup and view all the answers

Which of the following is an incorrect statement about tumors?

Ameloblastoma is always a unilocular lesion. Signup and view all the answers

Which of the following statements about Dopier dyeing is true?

It is utilized to display vascularization of tumors. Signup and view all the answers

What plane divides the human body into right and left parts?

Sagittal Signup and view all the answers

What is the status of MRI examinations during pregnancy?

Absolute contraindication throughout pregnancy. Signup and view all the answers

Which of the following is NOT a cause of carcinomatous lung lymphangiopathy?

Hematogenic spread Signup and view all the answers

What describes echogenicity in ultrasound imaging?

Various degrees including anechogenic and hyperechogenic. Signup and view all the answers

Which method is best for diagnosing a hemorrhagic stroke of the brain?

Native CT scan. Signup and view all the answers

What was the first X-ray machine in Slovakia used by?

Professor Rudolf Jedlička Signup and view all the answers

How is the density of CT examination expressed?

In Hounsfield units (HI) Signup and view all the answers

Study Notes

Examination for Dentists

Radiopaque Structures: Structures that appear dark on a radiograph, such as bone and calcification.
Inverted 'Y' Configuration: Formed by the merging of the maxillary sinus and lateral nasal wall. It's an anatomical landmark, commonly seen in canine or premolar regions.
Osteomyelitis: Appears as a radiopaque area with unclear borders.
Radiographic Appearance of Structures: Sialoliths, exostoses, and enostoses appear white on a radiograph. Radiolucency is a radiographically dark area of any sort. Odontogenic keratocysts may appear radiolucent.
Sialography: A useful diagnostic method for detecting ductal stones. Obstructions result in a filling defect or ductal dilation. Not helpful for autoimmune diseases.
CT Examination with Contrast Agent: Avoid in pregnant patients and those with hyperthyroidism or suspected subarachnoid hemorrhage.
Dental Cone Beam Imaging: Generates panoramic cone-shaped images of the head and neck, primarily to produce large images.
MRI and Contraindications: Dental implants and heart pacemakers are contraindications. MRI is helpful in differentiating malignant from normal tissue.
MRI of the Brain: On a T2-weighted image, gray matter appears darker than white matter.
Arthrography: A diagnostic technique that involves injecting contrast into a joint and then taking X-rays. It's used to diagnose joint infections, fibrosis related to trauma, and post-surgery assessment of TMJ.
Panoramic Radiography: Provides a broader view of upper and lower jaws, useful for detecting broader issues, especially where mouth opening is restricted. Not as crisp as intraoral imaging.
Intraoral Radiography, Paralleling Technique: Utilizes an X-ray beam to image teeth perpendicular from a central x ray beam that passes through the center of the image and the bisector between the film and the tooth.
Intraoral Radiography, Bisecting Angle Technique: A technique for intraoral radiography where the film is positioned close to the teeth, and the x-ray beam is angled to the bisector of the angle formed between the film and the long axis of the tooth. This method provides periapical projection but not bitewing projection.
Bitewing Views: Capture the crowns of upper and lower teeth to detect interproximal caries.
Occlusal Projection: Primarily for studying the arches for studying interproximal caries.
Dental Caries: Appears radiolucent.
Periodontal Diseases: Associated with horizontal bone loss and osseous defects characterized by radiographic relationship of cementoenamel junction (CEJ) with crest of the alveolus.
Diagnosis of Trauma: Radiolucent lines between tooth segments, tooth fragment displacement, and disrupted surface continuity are signs of fracture.
Cysts: Appear radiolucent and typically involve a sclerotic (dense) or hyperostotic (porous) border. Other examples include naso-palatine and odontogenic cysts.
Tumors: Usually are either radiopaque or radiolucent, with a multilocular or unilocular radiographic appearance .
Contrast Media: Barium sulfate suspension are used to improve visualization of the gastrointestinal tract.
Various Methods for Liver Biopsy: Liver biopsy is done when there is a need to evaluate tissue from the liver to diagnose conditions. Multiple procedures are available (USG/CT, laparoscopic) and are performed under local or general anesthesia..
Liver Biopsies: Can be performed with various modalities (CT, Ultrasound), frequently using a biopsy “cannon”.
Contraindications for MRI: Dental implants and heart pacemakers are contraindications for MRI. MRI may be useful for differentiating malignant tissue from normal tissue.

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Description

Test your knowledge on various cancer-related topics including Pancoast tumors and Lerish syndrome. This quiz covers methods for examining tumors in distinct organs and associations with primary hepatocellular carcinoma. Dive into the complexities of oncology and expand your understanding.