Tumoral subtypes

Articles

• fibrous cortical defect
  4 January 2010

  metaphyseal fibrous defect

• 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. (...)

• regressive Wilms tumor (post-chemotherapy)
  7 June 2011

  Digital case
  Case 82 (HPC:82) : Regressive Wilms tumor (post-chemotherapy)
  See also
  post-chemotherapy Wilms tumor

• thymoma type B1
  7 October 2010

  lymphocyte-rich thymoma
  Definition: Type B1 thymoma closely resembles normal thymus cytologically and architecturally. It is usually an encapsulated mass with fibrous bands (seen here) separating it into nodules or lobules. It has areas resembling normal thymic cortex which are composed of scattered epithelial cells in a dense background of immature T-cells. Foci of medullary differentiation (seen here as lighter areas) with or without Hassall’s corpuscles are always present.
  Given the (...)

• 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 (...)

• thymoma type A
  7 December 2012

  Spindle cell thymoma. Thymoma, type A.
  Definition: Type A thymoma (also known as Spindle Cell Thymoma) is composed of bland spindle or oval epithelial cells admixed with few or no lymphocytes. *
  Images
  Type A thymoma (also known as Spindle Cell Thymoma)
  https://twitter.com/smlungpathguy/status/856687119540027394
  Type A thymomas generally have a thick fibrous capsule as shown here. Prominent fibrous bands course through the tumor separating it into lobules.
  Type A thymoma is the (...)

• thymoma with micronodular features
  11 April 2012

  Micronodular thymoma
  Digital cases
  JRC:477 : Thymoma with micronodular features
  See also
  thymomas

• localized neurofibroma
  26 June 2008

  sporadic neurofibroma

• hyperdiploid myeloma
  3 September 2007

  References
  Chng WJ, Ketterling RP, Fonseca R. Analysis of genetic abnormalities provides insights into genetic evolution of hyperdiploid myeloma. Genes Chromosomes Cancer. 2006 Dec;45(12):1111-20. PMID: #16955468#

• EBV-associated mediastinal diffuse large B-cell lymphoma
  5 December 2011

  Mediastinal-pulmonary diffuse large B-cell lymphoma (DLBCL), EBV-associated

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