Skin

• 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

• sweat duct proliferations
  9 January

  Examples
  syringoma-like sweat duct proliferations
  See also
  sweat duct anomalies

• sweat duct anomalies
  9 January

  Examples
  sweat duct proliferations

• syringoma-like sweat duct proliferation
  9 January

  syringoma-like sweat duct proliferations
  Examples
  cicatricial alopecia
  See also
  sweat duct anomalies

• cicatricial alopecia
  9 January

  Images
  Scarring alopecia : perifollicular concentric fibrosis. Often lichen planopilaris or central centrifugal cicatricial alopecia (CCCA) https://twitter.com/JRamirezMD/status/789583799008972800
  Eccrine duct distention commonly seen in cicatricial alopecia. Not specific, found in CCCA, DLE,LPP https://twitter.com/LenSperling/status/818449172802207744
  See also
  alopecia

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