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 (...)

• juvenile xanthogranuloma
  24 October 2003

  juvenile xanthogranulomas; juvenile xanthogranuloma - generalized eruptive histiocytosis
  Definition: Juvenile xanthogranuloma (JXG), or generalized eruptive histiocytosis, 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#). It can be localized or multicentric.
  Juvenile xanthogranuloma is frequently found on the head and (...)

• 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. (...)

• 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 (...)

• primitive myxoid mesenchymal tumor of infancy
  4 April 2006

  PMMTI, myxoid mesenchymal tumor of infancy,

• clear cell adenocarcinomas
  14 June 2006

  clear cell adenocarcinoma
  Localization
  cervical clear cell adenocarcinoma
  vaginal clear cell adenocarcinoma
  See also
  Tumors Carcinomas Adenocarcinomas

• 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 (...)

• 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 (...)

• 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 (...)

• embryonal sarcoma
  28 June 2004

  undifferentiated embryonal sarcoma

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