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. (...)

• non-ossifying fibroma
  8 September 2004

  Fibrous cortical defect, cortical defect, nonossifying fibroma; non-ossifying fibroma; benign fibrous histiocytoma if mass-forming and involving the medullary cavity. NOF
  Definition: Non-ossifying fibroma is a benign, lytic lesion of fibrous origin most often observed in the metaphyseal region of the long bones in children and adolescents.
  Images
  Non-ossifying fibroma / NOF
  https://twitter.com/Maryross86/status/860657829203648512 (...)

• plexiform schwannoma
  14 September 2005

  plexiform cellular schwannoma

• clear cell meningioma
  28 January 2007

  Definition: Clear cell meningioma (CCM) is a rare variant of meningioma. It is rare tumor of the nervous system that usually occur in young patients and display high recurrence rates and potentially aggressive behavior. Although it has bland cytologic features, it has a higher rate of recurrence than does conventional meningioma.
  Images
  Clear cell meningioma, WHO grade II. https://twitter.com/KUSAURAP/status/860424737444331520
  Localization
  spinal/intradural (lumbar and thoracic) (...)

• botryoid rhabdomyosarcoma
  26 October 2007

  botryoid embryonal rhabdomyosarcoma, embryonal botryoid embryonal rhabdomyosarcoma

• 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 (...)

• fibrous cortical defect
  4 January 2010

  metaphyseal fibrous defect

• microscopic medullary thyroid carcinoma
  9 November 2010

  microscopic MCT; medullary thyroid microcarcinomas

• mixed epithelial and mesenchymal hepatoblastoma
  19 January 2006

  Definition: mixed hepatoblastoma represents 44% of hepatoblastomas.
  Images
  Liver tumor in an infant.Both fetal hepatocytes and bone in a single core: mixed hepatoblastoma. https://twitter.com/DraEosina/status/761515200109547520
  Subtypes
  with teratoid features
  See also
  hepatoblastomas

• 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 Digital slides
  UI:1832 - melanoma in situ (lentigo maligna)
  Lentigo (...)

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