<unk>  is a sebaceous cyst linked growth that can resemble a squamous cell carcinoma. The name is given after a 19th-century English surgeon Edward<unk> . The proliferating cyst is usually solitary, but it often arises from a simple trichilemmal cysts in the hair follicle epithelium and these are multiple in 70% of cases. They are most commonly found on the scalp where the proliferating trichilemmal cyst will grow to a large size and ulcerate. Chronic inflammation can cause the cyst to take the form of a granuloma. This granuloma mimics a squamous-cell carcinoma (both clinically and histologically) and these ulcerating solitary cysts are called<unk> . Chronic inflammation causes the cyst to take the form of a granuloma. This granuloma mimics a squamous cell<unk> . The most common sites are the ones where one can find hairs. These are, scalp and scrotum.
Cock's peculiar tumour
Milker's nodule
Askin's tumor
Pott's puffy tumor
Mule spinners' cancer
Olney's lesions
Koenen's tumor
Koeppe's nodules