Hidradenocarcinoma of the Left Knee in a 55-Year-Old Woman: A Case Report

The occurrence and scientific reporting of benign adnexal tumors arising from the eccrine and apocrine sweat glands, hair follicles, and pilosebaceous components of the skin is very rare. Even though they are uncommon, these long-standing benign lesions can transform into their malignant counterparts, which can be exceedingly difficult to treat because malignant lesions are linked to higher rates of morbidity and mortality. Here, we present a rare instance of primary hidradenocarcinoma of the left knee in a 55-year-old lady.