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 sarcoma
28 June 2004
undifferentiated embryonal sarcoma
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 (...)
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.
Images (...)
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
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#) (...)
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 (...)
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.
Images
Ameloblastoma
http://www.webpathology.com/image.asp?n=1&Case=166
https://twitter.com/dozing_dog/status/724843235567345664
https://twitter.com/reportesVilla/status/741089067631321088 (...)
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 (...)

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