Skin

• vellus hair cyst
  7 November 2020

  PO
  See also
  adnexal cysts

• cystic adnexal tumors
  7 November 2020

  Diagnosis
  cystic adnexal tumors with glandular architecture : hidrocystoma (two rows of cells) cutaneous ciliated cyst (cylindrical cells with cilia )
  cystic adnexal tumors with squamous differenciation / keratinization : trichilemmal cyst pilomatricoma steatocystoma (sebaceous lobules in wall ) vellus hair cyst (hair shafts in lumen) epidermoid cyst (contains lamellated keratin ) dermoid cyst (adnexal structures in wall) trichofolliculoma (radiating immature hairs ) warty (...)

• epidermal ulceration
  7 November 2020

  See also
  epidermal anomalies
  ulceration / ulcer

• apocrine tubular adenoma
  7 November 2020

  PO
  Definition : Benign dermal adnexal neoplasm of apocrine derivation.
  Differential diagnosis
  apocrine tumors apocrine cystadenoma : more dilated, cystic spaces rather than tubules papillary apocrine carcinoma : more cytologic atypia, irregular nuclear contours and a higher mitotic rate
  hidradenoma papilliferum often has complex arborizing papillae more closely arranged tumor cells and glands Limited to female genital region
  papillary eccrine adenoma: classically has features of (...)

• holocrine poroma
  7 November 2020

  Definition : complex poroid tumors with folliculosebaceous and apocrine differentiation.
  Paywall references
  PMID: #29095742#

• hidradenoma papilliferum With oncocytic metaplasia
  7 November 2020

  See also
  hidradenoma papilliferum
  oncocytic metaplasia
  Paywall references
  PMID: 27097337

• oncocytic nodular hidradenoma
  7 November 2020

  Paywall references
  PMID: #8806968#
  PMID: #28035705#

• chronic hidrosadenitis
  5 November 2020

  Synopsis
  fibrosis of apocrine glands

• fibrosis of apocrine glands
  5 November 2020, by admin

  Etiology
  chronic hidrosadenitis

• cellular blue nevus
  4 November 2020

  PO
  Differential diagnosis
  cellular neurothekeoma
  dermatofibroma
  malignant blue nevus scalp or heel lesion with marked nuclear atypia numerous mitotic figures some atypical and necrosis variable epithelioid tumor cells
  myoepithelioma
  See also
  common blue nevus
  melnocytic tumors

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