Architectural patterns

• nested architecture
  9 February 2019

  tumoral nests
  Examples
  SDHA paraganglioma / SDHB paraganglioma https://twitter.com/histiocytosisX/status/1147519794046021632 https://twitter.com/CaDxPath/status/1094046992827703296 SDHmut paragangliomas show distinctive morphology : very round nests , epithelioid cells , some cytoplasmic clearing .

• appearance of tumoral stroma
  25 January 2019

  Examples
  loose stroma
  inflammatory stroma
  See also
  tumoral stroma

• loose stroma
  25 January 2019

  See also
  appearance of tumoral stroma

• absence of basal cells
  25 January 2019

  Basal cell completely absent
  Examples
  prostatic adenocarcinoma
  mammary ductal adenocarcinoma
  See also
  basal cell anomalies / anomalies of basal cell

• luminal branching
  25 January 2019

  luminal branchings
  Examples
  Pseudohyperplastic variant of acinar adenocarcinoma of the prostate https://twitter.com/MayaNourieh/status/1088374292776132608

• papillary infoldings
  25 January 2019

  Examples
  Pseudohyperplastic variant of acinar adenocarcinoma of the prostate https://twitter.com/MayaNourieh/status/1088374292776132608

• micronodules
  18 January 2019

  Examples
  collagenous micronodules / mucinous fibroplasia in prostate tumors
  collagenous spherulosis in the breast
  See also
  nodules

• infiltrative borders
  12 January 2019

  See also
  borders regular borders

• irregular borders
  12 January 2019

  See also
  borders regular borders infiltrative borders
  tumoral patterns
  architectural patterns

• regular borders
  12 January 2019

  well-defined border
  See also
  borders irregular borders infiltrative borders
  tumoral patterns
  architectural patterns

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