KROK 1 Stomatology 2013 – Question 188 · KROK (Dentistry)
A 69-year-old 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 frequent mitoses. What is the histological form of carcinoma in this patient?
- A. Undifferentiated
- B. Adenocarcinoma
- C. Keratinizing squamous cell carcinoma
- D. Basal cell carcinoma
- E. Nonkeratinizing squamous cell carcinoma
Hint
Note the arrangement of the dark cells at the periphery of the tumour nests and the typical location on the facial skin of an elderly person.
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