Pediatric tumors

Articles

• hepatoblastoma
  16 March 2004

  hepatoblastomas
  Definition: Hepatoblastoma is a malignant embryonal liver tumor that occurs almost exclusively in infants and very young children.
  Image
  Macroscopy : https://twitter.com/DraEosina/status/762631086207893506
  Cytology: https://twitter.com/AdamGomezMD/status/720632495671087104
  https://twitter.com/MArnold_PedPath/status/736000944303808512
  Hepatoblastoma is composed of epithelial and mesenchymal elements in varying proportions and at various stages of differentiation. The (...)

• metanephric adenofibroma
  27 October 2003

  nephrogenic adenofibroma

• pilocytic astrocytoma
  12 July 2010

  Digital cases
  HPC:246 : Pilocytic astrocytoma
  Definition: Juvenile pilocytic astrocytomas (JPA), a subgroup of low-grade astrocytomas (LGA), are common, heterogeneous and poorly understood subset of brain tumours in children.
  Images
  https://twitter.com/chioseasi/status/715987893127356416
  https://twitter.com/KUSAURAP/status/739441710887895042
  Rosenthal fibers
  https://twitter.com/rxmsimages/status/718719835723603968
  Molecular biology
  oncogenic FAM131B-BRAF fusion resulting from (...)

• alveolar rhabdomyosarcoma
  25 November 2003

  Images
  Alveolar rhabdomyosarcoma.
  https://twitter.com/histiocytosisX/status/699599913013923840
  https://twitter.com/seattlequinns/status/855202143564742656
  ARMS : focal desmin w/ diffuse myogenin in A-RMS (PCR + PAX3-FOXO1)
  https://twitter.com/histiocytosisX/status/730475540524699649
  Compact ARMS : Alveolar rhabdomyosarcoma may lack alveolar spaces. Solid nodules uniform round cells,fibrous septa. DIFFUSE myogenin.
  https://twitter.com/JMGardnerMD/status/856870953011347456 (...)

• Clara cell adenoma
  14 June 2006

  See also
  Clara cells

• schwannoma
  8 March 2004

  schwannomas; neurilemmoma
  Definition: Schwannomas are benign peripheral nerve sheath tumors believed to be composed purely of cells with ultrastructural features of Schwann cells.
  Images
  Macroscopy
  https://twitter.com/RoshanNasim/status/854390780533686272
  Schannoma
  https://twitter.com/histiocytosisX/status/725342882740244480
  ectatic vessels with vascular parietal hyalinization is a common feature in schwannoma
  https://twitter.com/DCSkipperDO/status/753792588331749377
  Digital (...)

• 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 (...)

• rhabdomyomas
  10 November 2004

  rhabdomyoma
  Images
  cardiac rhabdomyoma in 2 week old female : Spider cells : Large polygonal cells with glycogen vacuoles https://twitter.com/bestpathologist/status/700584984663318528
  See also
  rhabdomyoblasts
  cardiomyocytes
  Digital slides
  Case 49 (HPC:49)
  Case 64 (HPC:64)
  Localization
  cardiac rhabdomyoma
  head and neck rhabdomyoma (#8319954#) parapharyngeal rhabdomyoma (#1530111#) multifocal rhabdomyoma of the neck (#2764225#)
  cutaneous fetal rhabdomyoma (#18300799#) (...)

• embryonal sarcoma
  28 June 2004

  undifferentiated embryonal sarcoma

• ameloblastoma
  15 December 2004

  Ameloblastoma of maxilla
  Definition: Ameloblastoma is a neoplasm that recapitulates ameloblastic development. Ameloblastoma is essentially a locally aggressive epithelial neoplasm with features of the enamel organ. Ameloblastoma bears BRAF-V600E mutations.
  Image
  Ameloblastoma
  http://www.webpathology.com/image.asp?n=1&Case=166
  https://twitter.com/dozing_dog/status/724843235567345664
  https://twitter.com/reportesVilla/status/741089067631321088 (...)

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