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. (...)

• 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 (...)

• plexiform schwannoma
  14 September 2005

  plexiform cellular schwannoma

• 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

• deep-seated plexiform schwannoma
  6 June 2006

  Plexiform schwannoma (PS) is one of the least common histologic variants of schwannoma. Deep-seated PS is a rare, under-recognized PNST of deep soft tissue, typically not associated with neurofibromatosis.
  Although commonly occurring in the extremities, they can be seen in other locations including the viscera. In contrast with the more common superficial (dermal and subcutaneous) tumors, deep PSs have a predilection for females, can occur in congenital settings, and can show necrosis and (...)

• immature teratoma
  25 January 2005

  Digital case
  JRC:261 : immature teratoma with prominent ganglioneuroblastoma-like component.
  Localization
  immatue cervical teratoma
  immature ovarian teratoma
  immature sacrococcygeal teratoma
  Cytogenetics
  trisomy 3 as the sole karyotypic change in an immature ovarian teratoma (3 years-old) (#9530347#)
  trisomy 12 and translocation (7;9) (18 years-old) (#2767876#)
  References
  Trisomy 3 as the sole karyotypic change in a pediatric immature teratoma. Mertens F, Kullendorff CM, (...)

• 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 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 (...)

• botryoid rhabdomyosarcoma
  26 October 2007

  botryoid embryonal rhabdomyosarcoma, embryonal botryoid embryonal rhabdomyosarcoma

• sarcoma in teratoma
  17 March 2007

  Teratoma with malignant transformation

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