Epithelial

• dysplasia
• adenoma
  • gastric adenoma
  • pyloric gland adenoma
• carcinoma
  • adenocarcinoma
    • papillary adenocarcinoma
    • tubular adenocarcinoma
    • mucinous adenocarcinoma
    • signet ring carcinoma
    • mixed adenocarcinoma
  • adenosquamous carcinoma
  • medullary carcinoma
  • hepatoid adenocarcinoma
  • undifferentiated carcinoma
• Neuroendocrine neoplasm

Mesenchymal

• Glomus tumor
• granular cell tumor
• leiomyoma
• plexiform fibromyxoma
• schwannoma
• inflammatory myofibroblastic tumor
• GIST
• Kaposi sarcoma
• leiomyosarcoma
• synovial sarcoma

Lymphoma

• MZL
• MCL
• DLBCL

Metastasis