KROK 1 Stomatology 2014 – Question 166 · KROK (Dentistry)
A 12-year-old girl has a bleeding ulcer 5 mm in diameter which is localized on the mouth floor. The ulcer is surrounded by bright-red tissue that turns white when pressed. Microscopic examination of a biopsy sample reveals a tumor constituted by a number of large cavities filled with blood. The cavities are lined with endothelial cells. Between the cavities there is stroma represented by the loose connective tissue. What is the most likely diagnosis?
- A. Squamous cell non-keratinizing carcinoma
- B. Secondary rhabdomyosarcoma
- C. Ulcerated melanoma
- D. Osteoblastoclastoma
- E. Ulcerated cavernous hemangioma
Hint
Link the blanching on pressure and the large blood-filled endothelium-lined spaces with the type of vascular tumour they describe.
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