G. Tumoral pathology

• lymphoid proliferations
  10 January

  lymphoid neoplasms; lymphoid tumors
  Types
  mature B-cell lymphoid neoplasms
  mature T- and NK-cell neoplasms
  Hodgkin lymphomas
  histiocytic and dendritic cell neoplasms
  References
  The 2016 revision of the World Health Organization classification of lymphoid neoplasms. doi:10.1182/blood-2016-01-643569. http://www.bloodjournal.org/content/127/20/2375

• fibroepithelial tumors
  6 January

  fibroepithelial lesions; Fibroepithelial neoplasms WKP
  Definition: Fibroepithelial tumors are biphasic tumors. This means they consist of epithelial tissue, and stromal or mesenchymal tissue. They may be benign or malignant.
  Examples
  Brenner tumor of the ovary
  mammary fibroepithelial tumors mammary fibroadenoma mammary phyllodes tumor
  See also
  biphasic tumors (...)

• Herpes Simplex Virus in tumors
  6 January

  Herpes Simplex Virus in cancer, HSV in tumors
  Images
  Herpes Simplex Virus in squamous cell carcinoma (SCC) but not normal mucosa https://twitter.com/chioseasi/status/815963765808201729
  necrosis in CLL/SLL : HSV infection https://twitter.com/mjcascio/status/857271286136885248

• sarcomatoid carcinomas
  5 January

  Images
  Scalp lesion in old man : sarcomatoid squamous cell carcinoma S100- SOX10- CKAE1/AE3+ https://twitter.com/ASDPTweets/status/745605167668662273 https://twitter.com/NimaArdakaniMD/status/816940273666113536

• paisley pattern
  5 January

  paisley tie pattern, paisley tie
  Definition: " paisley tie " is a tumoral pattern .
  In :
  syringoma
  desmoplastic trichoepithelioma
  basal cell carcinoma
  Images
  paisley pattern https://twitter.com/BenjaminAwood/status/816110523993362433
  desmoplastic trichoepithelioma https://twitter.com/nathan_t_harvey/status/816954835962576896
  syringoma : commas, paisleys, tadpoles https://twitter.com/RyanHickMD/status/696743080511156224
  See also
  tumoral (...)

• myoepithelioma
  2 January

  Images
  MYOEPITHELIOMA. IHC: +EMA (shown), panCK, S100; NGS: EWSR1-rearranged. NB: bland epithelioid cells w/ trabecular pattern & hyaline stroma. https://twitter.com/histiocytosisX/status/816329575345098752
  Localization
  cutaneous myoepithelioma
  salivary myoepithelioma
  myoepithelioma of soft tissue
  See also
  myoepithelial tumors

• collagen rosette
  28 December 2016

  collagen rosette
  Examples
  low-grade fibromyxoid sarcoma (LGFMS) https://twitter.com/histiocytosisX/status/717120196381646848

• serous carcinoma
  19 December 2016

  Localization
  ovarian serous carcinoma
  uterine serous carcinoma
  pelvic serous carcinoma
  Images
  Uterine serous carcinoma p53+ p16+ https://twitter.com/KUSAURAP/status/809587216569679877
  See also
  carcinomas

• depth of invasion
  14 December 2016

  DOI
  Depth of invasion (DOI) is not tumor thickness. It is measured by perpendicular dropped down from an horizontal line at basement membrane.
  See also
  tumor thickness
  Breslow depth

• pleomorphic spindle cell sarcoma
  8 December 2016

  PSCS
  See also
  pleomorphic sarcoma
  Paywall references
  Pleomorphic spindle cell sarcoma (PSCS) formerly known as malignant fibrous histiocytoma (MFH): a complex malignant soft-tissue tumor.
  Mankin HJ, Hornicek FJ, DeLaney TF, Harmon DC, Schiller AL.
  Musculoskelet Surg. 2012 Dec;96(3):171-7. doi: 10.1007/s12306-012-0225-0.
  PMID: #23129168#

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