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Middle ear neuroendocrine tumour/Middle Ear Adenoma (old term) Histopathology: – Surface mucosa appears unremarkable. – Mainly solid nests and trabecular growth patterns in a background of loose fibrous stroma, with pseudo-infiltrative looking pattern (carcinoid like look). – The single area shows a large glandular pattern. – Neoplastic cells show monotonous round to ovoid nuclei with…
Adenoid cystic carcinoma (ACC) of base of tongue Histopathology: Tumor shows predominant cribriform pattern, in a lobular/nested fashion, with extensive infiltration into the muscle tissue Tumor composed of predominantly myoepithelial cells, which are dark angulated hyperchromatic, basaloid look with scanty cytoplasm, lined the cylindromatous microcystic spaces. These are not the true glands. Few small ducts…
Ameloblastic Fibroma Histopathology: Nests and strips/trends of ameloblastic epithelium (similar to ameloblastoma), closely intermingled with viable cellular stroma Ameloblastic areas show palisaded columnar epithelium with central stellate epithelium. Columnar epithelium shows reverse polarity, due to location of nucelli away from basement layer, so creating subnuclear empty space. Stroma made up of loose collagenised hypocellular area…
Continue reading… “A 15 year old male with slow growing painless mass in mandible region” »
ODONTOGENIC MYXOMA/ ODONTOGENIC FIBROMYXOMA Histopathology: Low /hypocellular cellular tumor with prominent myxoid changes fibrous spindle and stellate cells are seen in myxoid and fibrous stroma, infiltrates in between bony trabeculae cells show pale eosinophilic cytoplasm minimal atypia and scanty to few mitoses are allowed collagen fibers are seen some epithelial rests are seen NO chondroid…
Continue reading… “A case of some around 35 year old female with a jaw swelling” »
