G. Tumoral pathology

• fusiform cell tumors with inflammatory background
  12 February

  Variants
  inflammatory myofibroblastic tumor Examples : https://twitter.com/daniel_berney/status/1095299013002301444
  See also
  fusiform cell tumors
  inflammatory background / inflammatory stroma

• hyalinized vessels in tumors
  9 February

  Examples
  PLEOMORPHIC HYALINIZING ANGIECTATIC TUMOR (PHAT) https://twitter.com/mariaramir/status/723662298389352452 https://twitter.com/DrSampyRoy/status/733023871725494274 https://twitter.com/DrAlodaini/status/950091320625958913 https://twitter.com/SteveBillingsMD/status/905427241361969152

• highly vascularized tumors
  9 February

  Etiology
  vascular tumors
  telangiectatic osteosarcoma
  Examples
  PLEOMORPHIC HYALINIZING ANGIECTATIC TUMOR (PHAT) https://twitter.com/mariaramir/status/723662298389352452 https://twitter.com/DrSampyRoy/status/733023871725494274 https://twitter.com/DrAlodaini/status/950091320625958913 https://twitter.com/SteveBillingsMD/status/905427241361969152

• myxedematous stroma
  9 February

  Examples
  Proliferative fasciitis https://twitter.com/histiocytosisX/status/726137886693806081 https://twitter.com/VishwasParekh/status/701774294997716992 https://twitter.com/feaselp811/status/733792267266330624
  See also
  tumoral stroma myxoid stroma edematous stroma

• tumoral cell cytoplasm
  9 February

  cytoplasm of tumoral cells
  Examples
  cytoplasmic clearing / clear cytoplasm SDH-mutated paraganglioma https://twitter.com/CaDxPath/status/1094046992827703296 SDHmut paragangliomas show distinctive morphology : very round nests, epithelioid cells, some cytoplasmic clearing.
  See also
  cytoplasm appearance

• SDH-mutated paraganglioma
  9 February

  Images : SDH-mutated paraganglioma https://twitter.com/CaDxPath/status/1094046992827703296 SDHmut paragangliomas show distinctive morphology : very round nests, epithelioid cells, some cytoplasmic clearing.
  Genetics
  Germline mutations in three of the succinate dehydrogenase (SDH, mitochondrial complex II) subunits (SDHD, SDHB and SDHC) cause susceptibility to head and neck paragangliomas, and may be found in approximately 20% of unselected patients.
  In addition, germline SDHD and (...)

• composite paraganglioma-ganglioneuroma
  22 January

  Open references
  Composite paraganglioma with ganglioneuroma in the retroperitoneal space. Ito H, Kurokawa T, Yokoyama O. Int J Urol. 2010 Apr;17(4):385-6. doi:10.1111/j.1442-2042.2010.02474.x. No abstract available. PMID: #20409235#
  Composite paraganglioma-ganglioneuroma in the retroperitoneum. Hirasaki S, Kanzaki H, Okuda M, Suzuki S, Fukuhara T, Hanaoka T. World J Surg Oncol. 2009 Nov 5;7:81. doi:10.1186/1477-7819-7-81. PMID: #19889235#
  Composite paraganglioma-ganglioneuroma of the (...)

• melanotic paraganglioma
  22 January

  Pigmented Pheochromocytoma
  Definition : Pigmental paraganglioma is a special and rare type of paraganglioma. It featured multiple pigment particles in the cytoplasm. Paragangliomas are rare neoplasms arising from undifferentiated cells of the primitive neural crest.
  Pigmented paraganglioma has been reported across a wide age range (17-57 years), and no gender differences were noted. It has arisen in the bladder, posterior peritoneum, mediastinum, spine, and other sites.
  Open references (...)

• HPV-associated lower anogenital squamous lesions
  12 January

  See also : HPV-associated lesions
  Open references
  The Lower Anogenital Squamous Terminology Standardization Project for HPV-Associated Lesions: Background and Consensus Recommendations from the College of American Pathologists and the American Society for Colposcopy and Cervical Pathology. https://doi.org/10.5858/arpa.LGT200570.
  http://www.archivesofpathology.org/doi/10.5858/arpa.LGT200570?url_ver=Z39.88-2003&rfr_id=ori:rid:crossref.org&rfr_dat=cr_pub%3dpubmed

• HPV-associated lesions
  12 January

  Types
  HPV-associated squamous cell carcinoma HPV-associated oropharyngeal squamous cell carcinoma HPV-associated head and neck squamous cell carcinoma HPV-associated tumors HPV-associated oral intraepithelial neoplasia lingual HPV-associated adenocarcinoma HPV-associated cervical squamous cell carcinoma HPV-associated oropharyngeal carcinomas HPV-associated adenocarcinoma pulmonary metastasis of HPV-associated SCCOP HPV-associated Bowen disease HPV-associated (...)

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