KROK 1 Stomatology 2014 – Question 187 · KROK (Dentistry)
A 69-year-old male patient got a small plaque with subsequent ulceration on the skin of the lower eyelid. The formation was removed. Microscopic examination of dermis revealed complexes of atypical epithelial cells arranged perpendicularly to the basal membrane on the periphery. The cells were dark, of polygonal prismatic shape with hyperchromic nuclei with a high mitotic rate. What is the histological form of carcinoma in this patient?
- A. Undifferentiated
- B. Keratinizing squamous cell carcinoma
- C. Adenocarcinoma
- D. Nonkeratinizing squamous cell carcinoma
- E. Basal cell carcinoma
Hint
Focus on the peripheral arrangement of the tumor cells perpendicular to the basement membrane and on the typical facial site in an elderly patient.
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