Malignant Transformation of Solitary Cylindroma Involving the Frontonasal Region- A Rarity ZD01-ZD04
99, Shree Samarth Kansai Section, Ambernath (East), Maharashtra, India.
Cylindromas are adenexal tumours of either eccrine or apocrine origin. Two common variants- Solitary and Multiple are seen, of which the malignant transformation of a solitary lesion is rare. Solitary tumours occur sporadically in the head and neck and are without a familial history whereas the multiple tumours are inherited in an autosomal dominant pattern occurring in scalp and rarely on trunk. Malignant transformation is observed commonly in multiple tumours, although transformation of solitary lesions has also been reported. We report a rare case of malignant transformation of a solitary cylindroma involving the fronto-nasal region in a 72-year-old man.