Tumoral subtypes

Articles

• uterine endometrioid adenocarcinoma, FIGO grade 1
  25 November 2010

  type 1 endometrial carcinoma
  Definition: Relatively indolent tumors that arise in background of endometrial hyperplasia.
  According to one definition, when endometrial glands show a confluent pattern occupying at least 2x2 mm focus, the diagnosis of adenocarcinoma can be made. Smaller foci are labeled "complex endometrial hyperplasia".
  The diagnosis of endometrioid adenocarcinoma can also be made if there is extensive papillary pattern or infiltrative glands with desmoplastic response. (...)

• plexiform schwannoma
  14 September 2005

  plexiform cellular schwannoma

• glucagonoma
  11 April 2012

  Digital case
  JRC:475 : Islet cell tumor (glucagonoma)
  See also
  insular tumors (islet cell tumor)

• lentigo maligna melanoma
  21 February 2005

  lentigo maligna; Dubreuilh melanosis
  Images
  lentigo maligna; Dubreuilh melanosis
  https://twitter.com/phmckee1948/status/845930300349788161
  starburst giant cell in lentigo maligna melanoma
  https://twitter.com/NimaArdakaniMD/status/830282684765069312
  Atypical cells in lentigo maligna intraepidermic melanoma v small regular cells of dermal nevus
  https://twitter.com/Tenonhospital/status/854393704504848384
  Webpathology : https://www.webpathology.com/image.asp?n=67&Case=704 (...)

• thymoma type B2
  7 December 2012

  Definition: Type B2 thymoma is composed of clusters of neoplastic epithelial cells in a background of abundant immature T-cells. The epithelial cell density is higher than that seen in type B1 thymoma or the normal thymus. Foci of medullary differentiation may or may not be seen. It makes up 25% to 30% of all thymomas.
  This image shows thick fibrous septa dividing the tumor into lobules.
  Type B2 thymoma is usually seen in adults in their 5th or 6th decade of life. Almost 55% of patients (...)

• 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 (...)

• pediatric cystic renal tumors
  11 February 2008

  cystic partially differentiated nephroblastoma

• osteoblastic osteosarcoma
  25 May 2011

  osteogenic osteosarcoma
  Images
  https://twitter.com/DrFNA/status/740722936932339717
  Digital cases
  Case 120 (HPC:120) : Osteoblastic osteosarcoma
  Case 127 (HPC:127) : Osteoblastic osteosarcoma
  Case 166 (HP:166) : Osteoblastic osteosarcoma
  Case 157 (HPC:157) : giant cell-rich osteoblastic osteosarcoma
  Case 140 (HPC:140) : Osteoblastic osteosarcoma
  Case 11734: Femoral osteoblastic osteosarcoma
  Macroscopy
  Some osteoblastic osteosarcomas may appear grey-tan and randomly (...)

• non-ossifying fibroma
  4 January 2010

  non-ossifying fibroma / metphyseal fibrous defect / metaphyseal fibrous defect; fibrous cortical defect ; Nonossifying fibroma ; The fibrous cortical defects (FCDs) have been mislabeled or described as cortical avulsive irregularities, subperiosteal or periosteal desmoid, a variant of periostitis ossificans, and cortical desmoid.
  In the literature, fibrous cortical defect (FCD) has a long list of pseudonyms, including metaphyseal fibrous defect, metaphyseal supracondylar cortical defect, (...)

• solid variant of aneurysmal bone cyst
  23 November 2006

  solid aneurysmal bone cyst; solid aneurysmal bone cyst variant

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