Digital Pathology Cases

Articles

• ancient schwannoma
  8 September 2010

  schwannoma with degenerated areas
  Definition: Schwannomas are encapsulated benign tumors arising from nerve sheath cells; the ancient schwannoma is one of the five variants. Ancient change in a schwannoma is a histological variant that is typically found in long-standing tumors, and is thought to result from degenerative changes ( degenerative atypia ).
  Images
  ancient schwannoma
  https://twitter.com/bestpathologist/status/737157944718983168
  " degenerative atypia " in sporadic (...)

• necrosis
  9 November 2004

  tissular death

• palisading granuloma
  29 December 2003

  palisaded granulomas
  Definition: Palisading granulomas are a subtype of necrotizing granuloma in which the mononuclear phagocytes at the periphery have elongated or spindle-shaped nuclei that are palisaded and arranged roughly parallel to each other and roughly perpendicular to the edge of the central necrotic zone.
  The most common are rheumatoid nodules and post-surgical necrobiotic granulomas occurring in the prostate, urinary bladder, and other sites.
  Est ulcération They have also (...)

• seborrheic keratosis
  31 August 2007

  seborrheic keratoses

• pilonidal sinus
  5 January 2005

  Digital cases
  Case 268 : Caudal pilonidal sinus with nervous tissue
  Variants
  pilonidal sinus cyst
  pilonidal sinus with nervous tissue

• progressive transformation of germinal centers
  15 December 2003

  PTGC, progressive transformation of germinal center

• chondroblastic osteosarcoma
  26 May 2009

  Digital cases
  Case 115 : Chondroblastic osteosarcoma of the calcaneum
  Definition : Chondroblastic osteosarcoma (OS) accounts for about 25% of all cases of OS.
  Localization
  flat bones
  temporal bone (#20730902#)
  Macroscopy
  Grossly, an overt chondroid appearance is rare. This is probably secondary to the cartilage component being less well-formed, high grade, and mixing with non-chondroid elements resulting in a lack of large areas of pure chondroid differentiation and its attendant (...)

• spleen
  28 August 2003

  Normal spleen. Adj. splenic
  WP - PathPedia
  Digital slides
  HPC:97 : Normal spleen
  HPC:266 : Normal spleen
  HPC:300 : Normal spleen (Idiopathic thrombopenic purpura)
  Images
  normal spleen
  https://twitter.com/histocasino/status/743550252267999232
  The spleen (from Greek σπλήν—splḗn) is an organ found in virtually all vertebrate animals. Similar in structure to a large lymph node, it acts primarily as a blood filter. Thus, life is possible after the spleen is removed.
  The spleen is the (...)

• chronic active gastritis
  18 October 2005

  CAG, active chronic gastritis

• Niemann-Pick diseases
  16 October 2003

  Niemann-Pick disease, NPDs

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