Case of giant eccrine hidrocystoma of the scalp

Matsushita, Satoru; Higashi, Yuko; Uchimiya, Hiroshi; Ohtani, Kiyomi; Kanekura, Takuro

doi:10.1111/j.1346-8138.2007.00338.x

Cited by 13 publications

(11 citation statements)

References 8 publications

(10 reference statements)

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“…Large CCH of the scalp, 3 breast 4 and ankle 5 have been reported, and the histological features in each of these cases have favored a benign process. Features of malignancy, such as necrosis, infiltrative border and mitosis (generally proposed as criteria of malignant clear cell hidradenocarcinoma in the literature) 6 –9 were absent upon histopathological examination of the giant CCH cited above 3–5 . However, malignant transformation of a giant hidradenoma involving the right postauricular area has been reported 10 .…”

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confidence: 99%

Giant clear cell hidradenoma of the knee

Yu¹,

Goodloe²,

D'Angelis³

et al. 2010

J Cutan Pathol

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Hidradenomas, also referred to as nodular hidradenomas or clear cell hidradenomas (CCH), are benign cutaneous eccrine tumors usually 2-3 cm in dimension. Hidradenomas are relatively common; however, giant forms are rare. We report a case of an 8.0 x 6.0 x 3.0 cm clear cell hidradenoma of the left knee in a 43-year-old man. The tumor was mobile, located above the patellar tendon and was without bony involvement on imaging studies. Grossly, the resected tumor was unencapsulated and tan, with a solid and cystic cut surface showing papillary excrescences on the cyst wall. Microscopically, the tumor cells showed an infiltrative growth pattern at the periphery, however, the tumor cytology was bland and no necrosis or mitoses were identified. The overlying dermis contained hemosiderin pigment deposition and infiltration with eosinophils. Immunohistochemically, tumor cells were positive for cytokeratin, CAM5.2, p53, carcino-embryonic antigen (CEA) and epithelial membrane antigen (EMA), and negative for CD10 and Ki-67. The cytological features of hidradenomas can present diagnostic challenges, as other 'clear cell' tumors such as metastatic renal cell carcinoma should be considered. Immunohistochemical studies and differential diagnoses are discussed.

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confidence: 99%

Giant clear cell hidradenoma of the knee

Yu¹,

Goodloe²,

D'Angelis³

et al. 2010

J Cutan Pathol

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“…Eccrine hidrocystomas have primarily been described on the central face, particularly in the malar and periorbital regions [3,4]. There are few cases involving the scalp, vulva, and shoulder [6][7][8].…”

Section: Discussionmentioning

confidence: 99%

Eccrine Hidrocystoma of the Central Chest and Dermoscopic Findings

Zanot¹,

Tschen

Silapunt³

2020

Cureus

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Eccrine hidrocystomas are benign, cystic tumors that are most commonly found on the central face in middle-aged females. Their dermoscopic findings are rarely described in the literature, with only seven cases currently reported to date. We present the case of an elderly man with an unusual location of an eccrine hidrocystoma of the central chest and its associated dermoscopic findings. Characterizing the dermoscopic features of eccrine hidrocystomas may allow for better differentiation of these lesions from cutaneous malignancies and may minimize unnecessary biopsies, treatment, and scarring.

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“…[ 1 ] Sometimes, the lesions can grow to a size greater than 1 cm, which are described as giant hidrocystomas. [ 2 3 ]…”

Section: Discussionmentioning

confidence: 99%