Tumoral subtypes

Articles

• uterine endometrioid adenocarcinoma, FIGO grade 1
  25 November 2010

  type 1 endometrial carcinoma
  Definition: Relatively indolent tumors that arise in background of endometrial hyperplasia.
  According to one definition, when endometrial glands show a confluent pattern occupying at least 2x2 mm focus, the diagnosis of adenocarcinoma can be made. Smaller foci are labeled "complex endometrial hyperplasia".
  The diagnosis of endometrioid adenocarcinoma can also be made if there is extensive papillary pattern or infiltrative glands with desmoplastic response. (...)

• non-ossifying fibroma
  8 September 2004

  Fibrous cortical defect, cortical defect, nonossifying fibroma; non-ossifying fibroma; benign fibrous histiocytoma if mass-forming and involving the medullary cavity. NOF
  Definition: Non-ossifying fibroma is a benign, lytic lesion of fibrous origin most often observed in the metaphyseal region of the long bones in children and adolescents.
  Images
  Non-ossifying fibroma / NOF
  https://twitter.com/Maryross86/status/860657829203648512 (...)

• pulmonary mucinous adenocarcinoma
  13 September 2011

  mucin-producing adencarcinomas; mucinous "colloid" adenocarcinoma, mucinous cystadenocarcinoma, and signet ring adenocarcinoma; mucinous adenocarcinomas of non-BAC type
  Definition: Mucin may be a prominent finding in rare examples of non-bronchioloalveolar lung carcinomas.
  Images
  Wikimedia: Mucinous lung adenocarcinoma
  Invasive mucinous adenocarcinoma Case 115 at YRC
  https://www.flickr.com/photos/pulmonary_pathology/3931952749
  Digital cases
  JRC:1597 : Cystic mucinous (...)

• sarcomatoid mesothelioma
  19 January 2010

  Digital case
  JRC:1604 : Sarcomatoid mesothelioma with osteocartilagenous differentiation.
  Subtype
  desmoplastic mesothelioma
  See also
  malignant mesothelioma
  biphasic mesothelioma
  References
  Sarcomatoid mesothelioma: a clinical-pathologic correlation of 326 cases. Klebe S, Brownlee NA, Mahar A, Burchette JL, Sporn TA, Vollmer RT, Roggli VL. Mod Pathol. 2010 Jan 15. PMID: #20081811#
  Value of immunohistochemistry in the differential diagnosis of pleural sarcomatoid mesothelioma (...)

• soft tissue perineurioma
  14 September 2005

  Perineuriomas are uncommon benign peripheral nerve sheath tumors that include soft tissue, sclerosing, and intraneural variants.
  Perineuriomas are rare tumors of the peripheral nerve sheath that share some characteristics with meningioma.
  Synopsis
  age: mean age, 46 years; range, 10-79 years
  tumor size: from 0.3 to 20 cm (mean, 4.1 cm)
  anatomic distribution: lower limb, upper limb, trunk, head and neck, retroperitoneum, paratesticular
  subcutis, deep soft tissue, limited to the (...)

• juvenile ossifying fibroma
  2 June 2010

  definition: Juvenile ossifying fibroma (JOF) is an uncommon fibro-osseous lesion occurring in the facial bones. It is highly aggressive and has a strong tendency to recur. It has been recognized as a separate histopathological entity among the fibro-osseous group of lesions. Surgical resection is the preferred line of treatment.
  Juvenile ossifying fibroma (JOF) is a fibro-osseous lesion that occurs in the facial bones. It is also called aggressive ossifying fibroma due to its (...)

• plexiform ameloblastoma
  14 June 2017

  Images
  Plexiform ameloblastoma with cells showing more granular cell change. https://twitter.com/bunn_belinda/status/874812283314216961 https://twitter.com/bunn_belinda/status/874812811825876992
  See also
  ameloblastoma

• giant cell fibroblastoma
  25 May 2011

  PO
  Definition: Giant cell fibroblastoma is are childhood fibroblastic tumor of intermediate malignancy with floret-like giant cells and ectatic pseudovascular spaces lined by stromal cells and giant cells.
  Digital cases
  Case 136
  Images
  Giant Cell Fibroblastoma : Giant cells lining pseudovascular spaces t(17;22) as DFSP https://twitter.com/VishwasParekh/status/764099885650042880 (...)

• compound odontoma
  10 May 2009

  compound odontomas

• follicular variant of papillary thyroid carcinoma
  7 April 2012

  Papillary carcinoma of the thyroid, follicular variant; FVPTC, FV-PTC; thyroid papillary carcinoma, follicular variant GFMER
  Subtypes
  NIFVPTC or NIFTP : non-invasive follicular variant of papillary thyroid carcinoma or encapsulated variant of papillary thyroid carcinoma
  Digital cases
  JRC:482 : Papillary carcinoma of the thyroid, partially follicular, with tall cell features.
  JRC:2666 : Thyroid Papillary carcinoma, encapsulated follicular variant (36 y/o male). (...)

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