Skin

• CD56+ lymphomatoid papulosis
  13 June

  Lymphomatoid papulosis with a natural killer-cell phenotype
  Examples
  Self-healing eschar-like erythematous nodule https://twitter.com/JAADjournals/status/1138792090048114688
  References
  Bekkenk, M.W., Kluin, P.M., Jansen, P.M., Meijer, C.J., and Willemze, R. Lymphomatoid papulosis with a natural killer-cell phenotype. Br J Dermatol. 2001; 145: 318–322.
  doi:10.1046/j.1365-2133.2001.04324.x.

• cutaneous CD56+ lymphoproliferations
  13 June

  CD56-positive haematological neoplasms of the skin
  References
  Assaf, C., Gellrich, S., Whittaker, S. et al. CD56-positive haematological neoplasms of the skin: a multicentre study of the Cutaneous Lymphoma Project Group of the European Organisation for Research and Treatment of Cancer. J Clin Pathol. 2007; 60: 981–989. https://jcp.bmj.com/content/60/9/981.short

• angioinvasive lymphomatoid papulosis
  13 June

  Angioinvasive lymphomatoid papulosis
  Paywall references
  Kempf, W., Kazakov, D.V., Scharer, L. et al. Angioinvasive lymphomatoid papulosis: a new variant simulating aggressive lymphomas. Am J Surg Pathol. 2013; 37: 1–13
  doi:10.1097/PAS.0b013e3182648596.
  Wu, W.M. and Tsai, H.J. Lymphomatoid papulosis histopathologically simulating angiocentric and cytotoxic T-cell lymphoma: a case report. Am J Dermatopathol. 2004; 26: 133–135 (...)

• matrical differentiation
  31 May

  Examples
  matrical differentiation https://www.ncbi.nlm.nih.gov/pubmed/28368926
  See also
  matrical cells
  hair matrix

• matrical cells
  31 May

  See also
  matrical differentiation

• dermal papillae with xanthomatous histiocytes
  15 May

  dermal papillae with xanthomatous histiocytes
  Examples
  verruciform xanthoma : dermal papillae with xanthomatous histiocytes https://twitter.com/Rami_AlRohil/status/1128124213284487175

• dermal papilla
  15 May

  dermal papillae
  Anomalies
  infiltration / infiltrate histiocytic infiltration dermal papillae with xanthomatous histiocytes

• cutaneous keratotic lesions
  8 May

  cutaneous keratotic localized anomalies
  Examples
  viral warts
  premalignant actinic keratosis
  squamous cell carcinoma
  basal cell carcinoma

• keratoderma
  28 April

  WKP

• keratotic anomalies
  28 April

  keratotic lesions
  types
  cutaneous keratotic lesions
  multiple keratotic lesions , cornoid lamellae : porokeratosis de Mibelli https://twitter.com/kriyer68/status/988356364975124482
  See also
  cutaneous hyperkeratosis / cutaneous keratosis

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