What is Cock's Peculiar tumour -: (A) Ulceration of sebaceous cyst on the scalp, (B) Calcifying epithelioma, (C) Mesothelioma of pleura, (D) Osteomylitis of skull
Answer is A. Ans. is 'a' i.e., Ulceration of sebaceous cyst on the scalp o Cocks peculiar tumour is actually a complication of sebaceous cyst -# When the sebaceous cyst of the scalp ulcerates excessive granulation tissue forms resembling fungating epithelioma. This is called cock's peculiar tumour.Also know these terms -o Cylindroma -# A malignant epithelial tumour also k/a Turban tumor# Known as cylindroma because of histological appearanceo Pilomatrixoma (Calcifying epithelioma of Malherbe)# It is a benign hair follicle derived tumouro Pott's puffy tumour# It is osteomyelitis of the skull associated with subperiosteal swelling and edema.