Clear cell hidradenoma of the second digit: A review of the literature with case presentation

Clear cell hidradenoma of the hand: A case report in an 83-year old patient

“…Two of them had a successful surgical excision without recurrence [ 7 , 11 ], while the third, observed in a 7-month old boy and located at wrist, was left untreated and spontaneously regressed in three months. Other three cases of CCH have been described on the foot, two located at the third and fourth toe [ 2 , 4 ] and the other at the lateral part of the foot [ 13 ]. All these cases were surgically excised and only one case recurred, shortly after the initial surgery; this patient underwent a second surgical excision, and no further recurrence was observed [ 13 ].…”

“…Clear cell hidradenoma (CCH) is a rare adnexal tumor of the apical sweat gland [ 1 ]. This tumor has been called by different names in literature over the years, including clear cell myoepithelioma, solid cystic hidradenoma and eccrine acrospiroma [ 2 ]. More recently, some authors [ 3 , 4 ] reported two different types of nodular hidradenoma: CCH that arises with apocrine differentiation and poroid hidradenoma which has eccrine differentiation.…”

Test yourself answer: exophytic slow-growing foot lesion

“…Although extremities are affected in 24% of cases, feet are affected in only 3% of cases [4]. Usually, these tumors appear as solitary lesions covered by normal skin, though ulceration may occur; and they are generally painless [4,5]. Demographically, hidradenomas occur most frequently in middleaged patients, and women are affected twice as often as men [2,3,6].…”

Hard nodules over the foot

“…Only a few cases of large hidradenomas over the foot are described in literature. [ 3 4 5 ] Winkelmann et al [ 3 ] reported 41 cases of nodular hidradenoma of which only two were located on the foot. Feldman et al [ 4 ] described a 59-year-old man with clear cell hidradenoma on the toe of the right foot.…”

“…[ 3 4 5 ] Winkelmann et al [ 3 ] reported 41 cases of nodular hidradenoma of which only two were located on the foot. Feldman et al [ 4 ] described a 59-year-old man with clear cell hidradenoma on the toe of the right foot. Will et al [ 5 ] reported a case of recurrent clear cell hidradenoma over the lateral aspect of foot in a 40-year-old Caucasian male.…”