Cock's peculiar tumour is: September 2007
Ans. A: Infected sebaceous cyst Cock's peculiar tumour is a sebaceous cyst linked growth. One form of sebaceous cyst is the trichilemmal cyst; these are thought to arise from the hair follicle epithelium and are most commonly found on the scalp. Usually they are multiple but occasionally there can be a proliferating trichilemmal cyst which grows to a large size and ulcerates. These can resemble a squamous cell carcinoma (both clinically and histologically) and these ulcerating solitary cysts are called Cock's peculiar tumour.
Infected sebaceous cyst
Osteomyelitis of skull
Cyst in the skull
Tumour of the skull