Skin

• interstitial granulomatous dermatitis with arthritis
  23 August 2004

  Synopsis
  linear inflammatory indurations on the lateral aspects of the trunk (the rope sign)
  arthritis
  plaques and papules have been reported
  References
  Altaykan A, Erkin G, Boztepe G, Gokoz A. Interstitial granulomatous dermatitis with arthritis. Hum Pathol. 2004 Jul;35(7):892-4. PMID: #15257555#

• cutaneous vasculitis
  12 August 2004

  Digital cases
  Case 198 (HPC:198): Cutaneous eosinophilic vasculitis in Churg-Strauss disease Digital cases
  UI:634 - Leukocytoclastic vasculitis
  Images
  Polyarteritis nodosa : fibrinoid necrosis and neutrophils infiltrating the medium-sized vessels in the deep dermis and subcutis
  https://twitter.com/JJSpeiserMD/status/793580966623215622
  Lesional patterns
  leukocytoclastic vasculitis
  lymphocytic vasculitis
  neutrophilic vasculitis
  necrotizing vasculitis
  granulomatous (...)

• cutaneous follicular tumors
  9 August 2004

  hair follicle-related tumors; Skin adnexal neoplasms and neoplastic‐like lesions of pilosebaceous origin
  Classification
  Hyperplastic and hamartomatous lesions basaloid follicular hamartoma basaloid epidermal proliferation overlying dermal mesenchymal lesions trichofolliculoma folliculosebaceous cystic hamartoma trichodiscoma / fibrofolliculoma pilar sheath acanthoma
  Benign neoplasms trichofolliculoma desmoplastic trichoepithelioma trichoblastoma trichoblastic fibroma trichoadenoma (...)

• recurrent nevus
  8 July 2004

  Differential:
  malignant melanoma
  dysplastic nevus
  Return to: melanocytic tumors

• lentigo simplex
  8 July 2004

  The simple lentigo is a brown to black, sharply circumscribed and usually uniformly pigmented macule, measuring a few millimeters in diameter. It may be found anywhere on the body surface.
  The term ‘labial melanotic macule’ is now used for a clinically similar lesion on the lip that was previously referred to as a lentigo.
  Microscopy
  There is variable basal hyperpigmentation with an increased number of single melanocytes in the basal layer.
  There is usually acanthosis, with regular (...)

• dysplastic nevus
  8 July 2004

  melanocytic dysplastic nevi, compound Clarks nevus

• actinic keratosis
  6 July 2004

  solar keratosis, senile keratosis, pre-epitheliomatous keratosis WKP
  Digital cases
  UI:906 - Actinic keratosis.
  UI:917 - Actinic keratosis.
  UI:1826- Actinic keratosis.
  JRC:10567 : Actinic keratosis.
  JRC:10569 : Actinic keratosis.
  Definition: Actinic keratosis is a premalignant condition of thick, scaly, or crusty patches of skin
  It is more common in fair-skinned people and it is associated with those who are frequently exposed to the sun, as it is usually accompanied by (...)

• halo nevus
  5 July 2004

  Compound nevus with halo reaction

• solar lentigo
  5 July 2004

  Differential diagnosis
  lentigo maligna
  lentigo simplex
  freckle
  See also
  melanocytic tumors

• cutaneous fibrous tumors
  2 July 2004

  superficial fibrous tumors

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