Skin

• cutaneous horn
  17 November

  WKP
  Definition : Cutaneous horns, also known by the Latin name cornu cutaneum, are unusual keratinous skin tumors with the appearance of horns, or sometimes of wood or coral. Formally, this is a clinical diagnosis for a "conical projection above the surface of the skin."
  They are usually small and localized, but can, in very rare cases be much larger. Although often benign, they can also be malignant or premalignant.
  Etiology (examples)
  verruca vulgaris (wart)
  actinic keratosis (...)

• cutaneous epithelial tumors
  10 November

  Classification
  cutaneous epithelial tumors epidermal tumors (tumors of the epidermis ) cutaneous neuroendocrine and neuroectodermal tumors cutaneous appendage tumors follicular tumors apocrine tumors (sebaceous tumors ) eccrine tumors appendage cutaneous cysts appendage carcinomas cutaneous metastasis / metastatic cutaneous tumors cutaneous Paget disease
  See also
  cutaneous tumors
  epithelial (...)

• giant cell melanoma
  9 October

  Giant Cell Melanoma
  Images
  https://www.webpathology.com/image.asp?case=1026&n=37
  See also
  giant multinucleated cell tumors

• pigment-producing melanoma
  9 October

  Pigment-producing (Animal-type) Melanoma
  Pigment-producing (Animal-type) Melanoma
  Images
  https://www.webpathology.com/image.asp?case=1026&n=33

• rhabdoid melanoma
  9 October, by admin

  Images
  https://www.webpathology.com/image.asp?n=29&Case=1026

• spindle cell melanoma
  9 October

  Images
  https://www.webpathology.com/image.asp?case=1026&n=1

• regression in melanoma
  9 October

  Definition : Histologic evidence of partial regression is seen in 10-35% of primary cutaneous melanomas. In a small number of cases, melanomas regress completely after giving rise to nodal or distant metastases. In 5-15% of cases of metastatic melanoma, the primary tumor is never found, presumably due to complete regression.
  Images
  https://www.webpathology.com/image.asp?n=35&Case=1025

• Clark level
  9 October

  Clark’s level WKP
  Definition : Clark’s level is a staging system, used in conjunction with Breslow depth , which describes the level of anatomical invasion of the melanoma in the skin.
  Five anatomical levels are recognized, and higher levels have worsening prognostic implications. These levels are:
  Level 1: Melanoma confined to the epidermis ( melanoma in situ )
  Level 2: Invasion into the papillary dermis
  Level 3: Invasion to the junction of the papillary and reticular dermis (...)

• digital papillary adenocarcinoma
  20 September

  Aggressive digital papillary adenocarcinoma
  Definition : Aggressive digital papillary adenocarcinomas are rare malignant tumors often located on the digits of the hand. Due to lack of pain, slow growth, and an inconspicuous appearance, diagnosis is often missed or delayed.
  Digital papillary carcinoma (DPC) is a rare, slow growing, malignant tumor with eccrine differentiation that occurs predominantly in digits. This tumor was originally classified as a benign neoplasm; aggressive digital (...)

• morphea
  17 September

  See also
  dermal fibroses

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