DOME/GALT type adenocarcimoma of the colon: a case report, literature review and a unified phenotypic categorization

Diagn Pathol. 2015 Jul 9:10:92. doi: 10.1186/s13000-015-0305-1.

Abstract

Several types of colorectal cancers are associated with a prominent lymphoid component, which is considered a positive prognostic factor. We report a case of a dome-type carcinoma of the cecum in a 57 year old female. The sessile, non-polypoid lesion histologically consisted of a tubulovillous adenoma with low-grade dysplasia. The submucosal invasive component showed low-grade architectural features that included cystically dilated glands containing eosinohilic debris. Immunohistochemical studies displayed retention of the four mistmach repair proteins, consistent with a stable phenotype. After 3 years, the patient remains free of recurrence. A literature review highlighted striking similarities between dome-type carcinoma and the gut-associated lymphoid tissue carcinoma, the two sharing an intimate association with the gut associated lymphoid tissue.The two variants might therefore be grouped into a unified category.

Publication types

  • Case Reports
  • Review

MeSH terms

  • Adenocarcinoma / chemistry
  • Adenocarcinoma / classification
  • Adenocarcinoma / pathology*
  • Adenocarcinoma / surgery
  • Biomarkers, Tumor / analysis
  • Biopsy
  • Cecal Neoplasms / chemistry
  • Cecal Neoplasms / classification
  • Cecal Neoplasms / pathology*
  • Cecal Neoplasms / surgery
  • Colectomy
  • Colonic Neoplasms / chemistry
  • Colonic Neoplasms / classification
  • Colonic Neoplasms / pathology*
  • Colonic Neoplasms / surgery
  • Colonoscopy
  • Diagnosis, Differential
  • Female
  • Humans
  • Immunohistochemistry
  • Lymphoid Tissue / chemistry
  • Lymphoid Tissue / pathology*
  • Lymphoid Tissue / surgery
  • Middle Aged
  • Neoplasm Grading
  • Neoplasm Staging
  • Phenotype
  • Predictive Value of Tests
  • Terminology as Topic
  • Time Factors
  • Treatment Outcome

Substances

  • Biomarkers, Tumor