WBR0077: Difference between revisions
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{{WBRQuestion | {{WBRQuestion | ||
|QuestionAuthor=Kalsang Dolma | |QuestionAuthor=Kalsang Dolma | ||
|ExamType=USMLE Step | |ExamType=USMLE Step 2 CK | ||
|MainCategory=Head and Neck | |MainCategory=Pathology | ||
|SubCategory= | |SubCategory=Head and Neck | ||
|MainCategory=Head and Neck | |MainCategory=Pathology | ||
|SubCategory= | |SubCategory=Head and Neck | ||
|MainCategory=Head and Neck | |MainCategory=Pathology | ||
|SubCategory= | |SubCategory=Head and Neck | ||
|MainCategory=Head and Neck | |MainCategory=Pathology | ||
|Prompt=A 48 year old | |MainCategory=Pathology | ||
|Explanation= | |MainCategory=Pathology | ||
|SubCategory=Head and Neck | |||
|MainCategory=Pathology | |||
|SubCategory=Head and Neck | |||
|MainCategory=Pathology | |||
|SubCategory=Head and Neck | |||
|MainCategory=Pathology | |||
|SubCategory=Head and Neck | |||
|MainCategory=Pathology | |||
|MainCategory=Pathology | |||
|SubCategory=Head and Neck | |||
|Prompt=A 48-year-old man presents to the primary care clinic with a two-day history of eye pain, excessive watering of the eyes, and the sensation of foreign bodies in the eyes. He reports he has had multiple similar episodes in the past. On examination with Woods lamp and flourescein dye, multiple corneal erosions are noted. This condition results from failure of attachment between which of the following two structures? | |||
|Explanation=The patient is most likely diagnosed with recurrent corneal erosions. It is a disorder of the eyes characterized by the failure of the cornea's outermost layer of epithelial cells to attach to the underlying basement membrane (Bowman's layer). The condition is frequently painful because the loss of these cells results in the exposure of sensitive corneal nerves. Patients presents with recurring attacks of acute eye pain, foreign-body sensation, photophobia (i.e. sensitivity to bright lights), and tearing often at the time of awakening or during sleep when the eyelids are rubbed or opened. | |||
|AnswerA=Corneal epithelial cells and the basement membrane (Bowman's layer) | |AnswerA=Corneal epithelial cells and the basement membrane (Bowman's layer) | ||
|AnswerAExp=The disorder of recurrent corneal erosion occurs due to a poor adhesion between the corneal epithelial cells and the basement membrane cells (Bowman's layer). | |AnswerAExp=The disorder of recurrent corneal erosion occurs due to a poor adhesion between the corneal epithelial cells and the basement membrane cells (Bowman's layer). | ||
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|AnswerDExp=The disorder of recurrent corneal erosion occurs due to a poor adhesion between the corneal epithelial cells and the basement membrane cells (Bowman's layer). | |AnswerDExp=The disorder of recurrent corneal erosion occurs due to a poor adhesion between the corneal epithelial cells and the basement membrane cells (Bowman's layer). | ||
|RightAnswer=A | |RightAnswer=A | ||
|Approved= | |Approved=No | ||
}} | }} | ||
Latest revision as of 23:15, 27 October 2020
| Author | PageAuthor::Kalsang Dolma |
|---|---|
| Exam Type | ExamType::USMLE Step 2 CK |
| Main Category | MainCategory::Pathology |
| Sub Category | SubCategory::Head and Neck |
| Prompt | [[Prompt::A 48-year-old man presents to the primary care clinic with a two-day history of eye pain, excessive watering of the eyes, and the sensation of foreign bodies in the eyes. He reports he has had multiple similar episodes in the past. On examination with Woods lamp and flourescein dye, multiple corneal erosions are noted. This condition results from failure of attachment between which of the following two structures?]] |
| Answer A | AnswerA::Corneal epithelial cells and the basement membrane (Bowman's layer) |
| Answer A Explanation | AnswerAExp::The disorder of recurrent corneal erosion occurs due to a poor adhesion between the corneal epithelial cells and the basement membrane cells (Bowman's layer). |
| Answer B | AnswerB::The basement membrane (Bowman's layer) and the corneal stroma |
| Answer B Explanation | AnswerBExp::The disorder of recurrent corneal erosion occurs due to a poor adhesion between the corneal epithelial cells and the basement membrane cells (Bowman's layer). |
| Answer C | AnswerC::The corneal stroma and Descemet's membrane |
| Answer C Explanation | AnswerCExp::The disorder of recurrent corneal erosion occurs due to a poor adhesion between the corneal epithelial cells and the basement membrane cells (Bowman's layer). |
| Answer D | AnswerD::The corneal epithelial cells and Descemet's membrane |
| Answer D Explanation | AnswerDExp::The disorder of recurrent corneal erosion occurs due to a poor adhesion between the corneal epithelial cells and the basement membrane cells (Bowman's layer). |
| Answer E | AnswerE:: |
| Answer E Explanation | AnswerEExp:: |
| Right Answer | RightAnswer::A |
| Explanation | [[Explanation::The patient is most likely diagnosed with recurrent corneal erosions. It is a disorder of the eyes characterized by the failure of the cornea's outermost layer of epithelial cells to attach to the underlying basement membrane (Bowman's layer). The condition is frequently painful because the loss of these cells results in the exposure of sensitive corneal nerves. Patients presents with recurring attacks of acute eye pain, foreign-body sensation, photophobia (i.e. sensitivity to bright lights), and tearing often at the time of awakening or during sleep when the eyelids are rubbed or opened. Educational Objective: |
| Approved | Approved::No |
| Keyword | |
| Linked Question | Linked:: |
| Order in Linked Questions | LinkedOrder:: |