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 (...)

• embryonal rhabdomyosarcoma
  25 November 2003

  Images
  Vaginal mass. In embryonal rhabdomyosarcoma, botryoid type. Cambium layer, rhabdomyoblasts vary from round to strap-shaped cells. https://twitter.com/A_Elshaikh/status/893992220356997120
  Digital cases
  HPC:181 : Embryonal rhabdomyosarcoma of the maxillary region
  HPC:210 : Embryonal rhabdomyosarcoma
  HPC:211 : Botryoid embryonal rhabdomyosarcoma
  HPC:250 : Botryoid embryonal rhabdomyosarcoma of the nasopharynx.
  JRC:19400 : Pulmonary embryonal rhabdomyosarcoma. (...)

• 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 (...)

• metanephric adenofibroma
  27 October 2003

  nephrogenic adenofibroma

• juvenile xanthogranuloma
  24 October 2003

  juvenile xanthogranulomas
  Definition: Juvenile xanthogranuloma (JXG) is a rare disorder of the non-Langerhans cell histiocytosis (LCH) type with unknown etiology and pathogenesis. It is still unclear whether JXG is a reactive or a neoplastic process. Clonality has been assessed (#17460468#).
  Juvenile xanthogranuloma is frequently found on the head and trunk in infants, but can be diagnosed in older patients. It is composed of a dense lymphohistiocytic proliferation that stains positive (...)

• Clara cell adenoma
  14 June 2006

  See also
  Clara cells

• primitive myxoid mesenchymal tumor of infancy
  4 April 2006

  PMMTI, myxoid mesenchymal tumor of infancy,

• 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 (...)

• 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#) (...)

• adamantinoma
  14 June 2006

  adamantinomas
  Digital cases
  JRC:4309 : Adamantinoma (Bone; 37 y/o male).
  JRC:900 : Adamantinoma (Bone (tibia and fibula); 29 y/o male).
  JRC:3170 : Classic adamantinoma (Bone: tibia).
  JRC:15204 : Adamantinoma? (Bone: leg / Diff DX: Monophasic synovial sarcoma?).
  JRC:19170 : Adamantinoma? (Bone: leg / Diff DX: Monophasic synovial sarcoma?).
  Localization
  adamantinoma of long bones
  Variants
  differentiated adamantinoma (osteofibrous dysplasia-like adamantinoma)
  Cytogenetics (...)

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