Skin

• 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

• porocarcinoma
  17 September

  sweat gland carcinoma PO
  Images
  https://twitter.com/KayKoMD/status/1173634860377882624
  Synopsis
  clear cell features
  focal squamoid differentiation
  increased cytologic atypia
  multiple mitotic figures
  ductal structures are typically present (especially in well-differentiated cases)
  See also
  eccrine poroma

• Henderson–Patterson bodies
  17 July

  molluscum bodies (Henderson–Patterson body)
  Examples
  22 yo female x 2 mo. Dx: giant molluscum contagiosum . epidermal hyperplasia with crater containing pretty molluscum bodies (Henderson–Patterson bodies). Giant molluscum may indicate underlying immunodeficiency. https://twitter.com/globaldermie/status/1151159744565874688

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