Skin

• verruciform xanthoma
  16 February

  Images
  Verruciform xanthoma https://twitter.com/azdermpath/status/832062637903011840
  See also
  verruciform anomalies
  xantomas xanthomatous anomalies

• starburst giant cell
  13 February

  Images
  starburst giant cell in lentigo maligna melanoma https://twitter.com/NimaArdakaniMD/status/830282684765069312
  See also
  giant cells
  lentigo
  malignant melanoma
  Paywall references
  The starburst giant cell is useful for distinguishing lentigo maligna from photodamaged skin.
  Cohen LM.
  J Am Acad Dermatol. 1996 Dec;35(6):962-8.
  PMID: #8959956#

• cutaneous epithelioid schwannoma
  26 January, by admin

  Epithelioid schwannoma of the skin
  See also
  epithelioid schwannoma
  cutaneous tumors
  Open references
  Epithelioid schwannoma of the skin displaying unique histopathological features: a teaching case giving rise to diagnostic difficulties on a morphological examination of a resected specimen, with a brief literature review. Yamada S, Kirishima M, Hiraki T, Higashi M, Hatanaka K, Tanimoto A. Diagn Pathol. 2017 Jan 19;12(1):11. doi: 10.1186/s13000-017-0604-9. PMID: #28103910# (...)

• acanthosis nigricans
  23 January

  Images
  Acanthosis nigricans https://twitter.com/AlexNavarini/status/823061412486512640
  See also
  acanthosis

• folliculitis
  20 January

  Images - Examples
  folliculitis keloidalis nuchae (acne keloidalis) is extremely rare in women https://twitter.com/Dermpathl/status/821894469364711424
  erlotinib-associated folliculitis https://twitter.com/JAADjournals/status/834010148695851008
  See also
  acne
  cutaneous anomalies cutaneous inflammation

• folliculitis keloidalis nuchae
  20 January

  acne keloidalis
  Images
  Folliculitis keloidalis nuchae (acne keloidalis) is extremely rare in women https://twitter.com/Dermpathl/status/821894469364711424
  See also
  acne
  folliculitis

• pagetoid tumors
  18 January

  pagetoid proliferations; pagetoid spread; pagetoid extension
  Images
  pagetoid SCC in situ. Areas of nearly full thickness atypia .
  https://twitter.com/mb_Pathology/status/821370172183232514
  DCIS with pagetoid spread. E-cadherin and p120 catenin https://twitter.com/LizaMQuintana/status/843844306779758593
  See also
  ductal carcinoma in situ / DCIS pagetoid DCIS
  cutaneous Paget disease
  pagetoid squamous cell carcinoma in situ / pagetoid SCC in (...)

• pagetoid SCC in situ
  18 January

  pagetoid squamous cell carcinoma in situ
  Images
  Pagetoid SCC in situ. Areas of nearly full thickness atypia .
  https://twitter.com/mb_Pathology/status/821370172183232514
  See also
  pagetoid tumors
  pagetoid squamous cell carcinoma in situ / SCC in situ

• clear cell basal cell carcinoma
  18 January

  Images
  Clear cell basal cell carcinoma. Chest. 48 y/o F. Note preserved peripheral palisading https://twitter.com/Dermpathl/status/821414086470729728
  See also
  basal cell carcinoma
  cutaenous clear cell tumors

• Acanthamoeba-associated granulomatous dermatitis
  10 January

  subacute granulomatous dermatitis by Acanthamoeba
  Images
  subacute granulomatous dermatitis by Acanthamoeba in a cardiac transplant patient ; cyst form and trophozoite form https://twitter.com/Tenonhospital/status/810428211494535169
  See also
  Acanthamoeba sp.
  protozooses

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