Ophthalmology: Cellular Changes and Symptoms
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Questions and Answers

A patient reports seeing wavy or distorted images. Which of the following terms BEST describes this symptom?

  • Atrophy
  • Metamorphopsia (correct)
  • Hyperplasia
  • Scotoma

Increased pigmentation observed during an eye exam is most likely a result of which cellular change?

  • Migration
  • Metaplasia
  • Hyperplasia
  • Hypertrophy (correct)

Which cellular change involves the movement of cells from their original location to another?

  • Metaplasia
  • Atrophy
  • Migration (correct)
  • Hyperplasia

What type of cellular change describes the proliferation of cells, resulting in a larger number of cells in a tissue?

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

Which cellular change is characterized by one cell type being replaced by another cell type?

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

What cellular change correlates with missing cells?

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

Which of the following BEST describes a hamartoma?

<p>Exaggerated growth of normal cells in a typical location. (D)</p> Signup and view all the answers

A patient reports a partial loss of vision or the presence of a blind spot in their visual field. Which of the following terms best describes this symptom?

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

What remote macular findings might be observed in association with retinal tumors?

<p>Epiretinal membrane and cystoid macular edema. (B)</p> Signup and view all the answers

Ultrasonography of a retinal tumor typically reveals which characteristics?

<p>Moderately high internal reflectivity with no choroidal excavation or orbital shadowing. (A)</p> Signup and view all the answers

A patient presents with suspected RPE atrophy. Which imaging modality is the MOST useful for monitoring changes and potential complications?

<p>Optical coherence tomography (OCT). (A)</p> Signup and view all the answers

Which of the following is a key finding associated with RPE atrophy?

<p>Missing photoreceptors (ellipsoid zone). (A)</p> Signup and view all the answers

Why is it important to closely monitor patients with RPE atrophy?

<p>To monitor for choroidal neovascularization. (B)</p> Signup and view all the answers

A child is diagnosed with a combined hamartoma of the retina and RPE. Besides vision loss and strabismus, which systemic condition should the clinician be particularly vigilant in screening for?

<p>Neurofibromatosis type 2 (D)</p> Signup and view all the answers

What characteristic feature is most commonly observed in combined hamartoma of the retina and RPE?

<p>A nonuniform, charcoal gray-white fibroglial mass involving the neurosensory retina with pigment accumulation (A)</p> Signup and view all the answers

Which of the following is a potential complication associated with combined hamartoma of the retina and RPE that necessitates close monitoring?

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

What finding on fluorescein angiography (FA) is most characteristic of a combined hamartoma?

<p>Early hypofluorescence with late leakage (B)</p> Signup and view all the answers

Which of the following is the most important initial management step for a young child diagnosed with combined hamartoma?

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

A patient with combined hamartoma of the retina and RPE experiences decreased visual acuity. What secondary condition is most likely contributing to this decline?

<p>Epiretinal membrane (ERM) (B)</p> Signup and view all the answers

Which diagnostic modality is most useful in differentiating combined hamartoma from other similar conditions?

<p>Optical coherence tomography (OCT) (C)</p> Signup and view all the answers

A patient is diagnosed with an RPE adenoma. What is the most critical differential diagnosis to rule out?

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

Though surgical intervention is debated, what surgical procedure might be considered in certain cases of combined hamartoma to improve visual acuity?

<p>Vitrectomy with membrane peel (C)</p> Signup and view all the answers

What is the typical appearance of an RPE adenoma/adenocarcinoma?

<p>An abruptly elevated mass that can induce retinal exudation (D)</p> Signup and view all the answers

A patient presents with excessive skin cells in a bone. This condition is best described as:

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

Increased pigmented cells are found during a retinal exam. What is the most appropriate next step?

<p>Refer to gastroenterology for colonoscopy (B)</p> Signup and view all the answers

Which of the following is NOT a differential diagnosis (DDx) of CHRPE (Congenital Hypertrophy of the Retinal Pigment Epithelium)?

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

A patient is diagnosed with CHRPE. What is the most appropriate management strategy?

<p>Close follow-up with a retina specialist and referral to gastroenterology (C)</p> Signup and view all the answers

Reactive hyperplasia of the RPE is often associated with which of the following conditions?

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

What characteristic feature is commonly associated with reactive hyperplasia of the RPE?

<p>Small, irregularly shaped areas of pigment clumping (C)</p> Signup and view all the answers

In Optical Coherence Tomography (OCT), hyperplasia of the RPE causes what characteristic finding in the choroid?

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

A key difference between congenital simple hamartoma of the RPE (CSHRPE) and typical hyperplasia is:

<p>CSHRPE is often located on or near the macula (A)</p> Signup and view all the answers

Which of the following features is MOST characteristic of congenital simple hamartoma of the RPE (CSHRPE)?

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

A patient is diagnosed with congenital simple hamartoma of the RPE (CSHRPE) and presents with macular edema. What is the most likely effect on vision?

<p>Significant vision loss (C)</p> Signup and view all the answers

Which clinical feature is MOST indicative of RPE adenocarcinoma rather than RPE adenoma?

<p>Development of feeder vessels (C)</p> Signup and view all the answers

A patient presents with a pigmented retinal mass. Which additional finding would MOST strongly suggest RPE adenocarcinoma over adenoma?

<p>Extensive subretinal exudation (C)</p> Signup and view all the answers

What cellular characteristic distinguishes RPE adenocarcinoma from adenoma upon histological examination?

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

A patient is diagnosed with RPE adenoma. What is the MOST appropriate initial management strategy?

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

In the context of RPE tumors, the term 'malignant epithelioma' refers to which type of lesion?

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

Where do primary malignant adenocarcinomas of the RPE typically originate and potentially invade?

<p>Bruch's membrane; choroid or retina (D)</p> Signup and view all the answers

What finding on EDI-OCT is MOST suggestive of an RPE tumor?

<p>Irregular or 'rugged' tumor surface with full-thickness retinal involvement and dense posterior optical shadowing (C)</p> Signup and view all the answers

A key distinguishing feature of RPE adenocarcinoma compared to adenoma is its potential to cause which of the following?

<p>Vitreous seeds/cells (D)</p> Signup and view all the answers

What is a typical color of RPE adenoma?

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

A patient presents with a black, full-thickness retinal mass. Which of the following is LEAST likely to be associated with this lesion, based on the provided information?

<p>Absence of visual loss (A)</p> Signup and view all the answers

Flashcards

Asymptomatic lesions

Lesions that do not show symptoms and are often found during routine eye care.

Macular lesions

Lesions located in the macula, can lead to significant vision symptoms.

Metamorphopsia

Visual distortion where straight lines appear wavy or bent.

Scotoma

A blind spot in vision often indicating retinal issues.

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Atrophy

The degeneration or loss of cells in a tissue or organ.

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Hypertrophy

Increase in the size of cells often causing increased pigmentation.

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Hyperplasia

Proliferation of cells resulting in an increase in number, not size.

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Metaplasia

The transformation of one cell type into another type.

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Choristoma

Excessive cells in an inappropriate location, like skin cells in bone.

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CHRPE

Chronic Retinal Pigment Epithelium response, includes increased pigmented cells in the retina.

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Differential Diagnosis (DDx) of CHRPE

List of conditions to consider, including choroidal nevus and melanoma.

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Management of CHRPE

Refer to gastroenterology for colonoscopy and retina consultation for lesions.

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Reactive Hyperplasia of the RPE

Benign proliferation of RPE cells causing pigment clumping, may be idiopathic.

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Pigment Clumping

Presence of irregularly shaped areas of pigment caused by RPE hyperplasia.

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Congenital Simple Hamartoma of the RPE

Benign lesion with increased RPE cells, asymptomatic and non-progressive.

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Vitreous Traction

Pulling force on the retina that may lead to complications like edema.

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OCT in RPE Conditions

Optical Coherence Tomography shows shadowing and dark areas in RPE hyperplasia.

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Follow-up Recommendations

Regular annual monitoring for RPE conditions to prevent complications.

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Remote macular findings

Observations of epiretinal membrane, edema, or macular holes in macular lesions.

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Rugged pattern

A zig-zag pattern in retinal tumors that adenomas don't show.

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Ultrasonography findings

Moderately high reflectivity and irregular contour without shadowing in retinal exams.

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RPE atrophy

Defects in RPE continuity resembling a map, causing variable visual issues.

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Choroidal vascular formation

New vessel growth under the RPE indicating potential complications.

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RPE adenoma

A benign tumor of the retinal pigment epithelium that typically behaves less aggressively than an adenocarcinoma.

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RPE adenocarcinoma

A malignant tumor of the retinal pigment epithelium characterized by pleomorphism and aggressive behavior.

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Nuclear pleomorphism

Variation in cell nuclei size and shape, indicating potential malignancy.

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Choroidal invasion

The process by which tumors invade the choroid layer of the eye, often seen in malignant cases.

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Feeder vessel

Blood vessels that supply a tumor, often indicative of malignancy in the retina.

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Exudation in adenocarcinoma

The process where fluid and proteins leak from BV, more common in malignant tumors than benign.

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Vitreous hemorrhage

Bleeding into the vitreous humor of the eye, can be associated with retinal pathology.

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Subretinal exudation

Accumulation of fluid beneath the retina, often seen in RPE adenocarcinoma.

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OCT findings

Optical Coherence Tomography findings show irregular surfaces in retinal tumors.

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Vitreous seeds

Small deposits of tumor cells in the vitreous humor, seen in advanced cases of RPE adenocarcinoma.

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Combined Hamartoma

A benign malformation involving both RPE and sensory retina layers.

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Unilateral Appearance

Typically appears as a unilateral charcoal gray-white mass.

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Epiretinal Membrane (ERM)

A finding associated with combined hamartoma affecting the retina.

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Tractional Changes

Overlying traction changes affecting vessels and retina.

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Visual Acuity Impact

Half of the cases can have VA worse than 20/200.

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Neurofibromatosis Type 2

Condition associated with bilateral combined hamartomas.

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Choroidal Neovascularization

Abnormal vessel growth around the hamartoma.

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Management Strategies

Includes amblyopia prevention and regular monitoring.

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Differential Diagnosis (DDx)

Conditions to differentiate from combined hamartoma.

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Study Notes

Eye Lesions

  • Most eye lesions are asymptomatic and discovered during routine eye exams.
  • Macular lesions can cause significant vision loss (metamorphopsia, scotoma).
  • Lesions are categorized by cellular changes:
    • Atrophy: loss of cells
    • Hypertrophy: increased cell size (pigmented cells increase pigment granules)
    • Hyperplasia: increased cell number (cells are normal size)
    • Migration: movement of cells
    • Metaplasia: transformation of one cell type to another.
    • Hamartoma: excessive cells in inappropriate location (not considered cancerous)
    • Carcinoma: cancerous epithelial cells.
  • Cellular changes influence lesion appearance.
  • Patient history (family history, especially eye tumors) is vital.
  • Examination techniques (to determine benign or malignant) and monitoring are crucial.
  • Choroidal lesions are often dangerous, especially melanoma.
  • OCT, ultrasound, and fluorescein angiography (FAF, FA) can help diagnose.
  • Congenital hypertrophy of the retinal pigment epithelium (CHRPE) is a benign condition.
  • CHRPE has an association to other systemic diseases or other ocular diseases.
  • Some CHRPE can increase in size over time and are not common..
  • Minimum size to be a CHRPE is half to 1 disc diameter, can go up to 14 disc diameters .
  • Lacunae (openings) and halo features are typical for CHRPE.
  • CHRPE lesions do not change in size as opposed to other lesions.
  • Histopathology of CHRPE shows photoreceptors under the RPE to lose their membranes.
  • Histopathology of CHRPE cells are 1.5-2 times bigger than normal and increased number of pigment granules.
  • CHRPE have a extremely rare potential for malignant transformations.
  • Red-free filters and green-free filters can help distinguish lesions.
  • Using a green filter, a lesion in the choroid disappears.
  • Choroidal nevus may cause vision loss and difficulty differentiating it from other lesions.
  • Visual acuity (VA) and visual field (VF) are crucial for diagnosis and assessment.

Congenital Grouped Pigmentation of the RPE

  • Clustered lesions, small, brown-black, flat, in a specific location.
  • Vary in size, generally much smaller than CHRPE.
  • Lesions are typically unilateral but can be bilateral in one quadrant.
  • Histopathology suggests an increase in pigment granules within RPE cells.
  • Not associated with anything else, but can be unilateral.

Congenital Simple Hamatoma of RPE

  • Benign lesion, non-progressive
  • Usually as a small darkly pigmented lesion.

Combined Retinal Pigmented Epithelial Hamartoma

  • Less common, typically unilateral, and involves both retina and RPE.
  • Characterized by a nonuniform, gray-white, fibroglial mass, sometimes obscured.
  • Often related to other conditions like neurofibromatosis type 2.

Reactive Hyperplasia of the RPE

  • Common, condition of the RPE (idiopathic or due to inflammation, trauma, hemorrhage, etc.)
  • Can be stable, not necessarily malignant though.

Atrophy of the RPE

  • Defects in the RPE layer continuity; atrophy resembles a map-like appearance.
  • Multiple potential causes, like AMD, choroidal scarring, macular dystrophies or other conditions.
  • Geographic atrophy is an example of RPE atrophy, associated with AMD.

RPE Adenoma

  • Benign, rare intraocular tumor.
  • Difficult to differentiate from malignant choroidal melanoma
  • Characterized by abrupt elevation of masses, and sometimes accompanied by exudates or retinal hemorrhages.

RPE Adenocarcinoma

  • Malignant tumor.
  • May invade the choroid or retina, often has distinct features (exudation, feeder vessels, etc).
  • Not typically seen in a flat sheet.

Management

  • Management of most of the conditions often involves monitoring, referral to specialists (retina-oncologist), and sometimes specific therapy.
  • Early diagnosis is crucial and treatment should be personalized.

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Description

This quiz covers key concepts in ophthalmology, focusing on cellular changes and associated visual symptoms. It explores conditions like distorted vision, pigmentation changes, cell proliferation, and retinal tumors. Understand the relationship between cellular abnormalities vision problems.

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