Tumors of stomach may be classified, based on histology, into:
1. Epithelial tumors:
a. Intraepithelial neoplasia -Adenoma
Adenocarcinoma of Stomach
b. Carcinoma:
i. Adenocarcinoma:
- Diffuse type
- Intestinal type
ii. Papillary adenocarcinoma iii. Tubular adenocarcinoma iv. Mucinous adenocarcinoma v. Signet-ring cell carcinoma vi. Adenosquamous carcinoma vii. Squamous cell carcinoma viii. Small cell carcinoma ix. Undifferentiated carcinoma
x. Others
c. Carcinoid tumor (Well differentiated endocrine neoplasm)
2. Non-Epithelial:
a. Leiomyoma b. Schwannoma c. Granular cell tumour d. Leiomyosarcoma
e. Gastrointestinal Stromal tumour:
- Benign
- Uncertain malignant potential
- Malignant
f. Kaposi’s sarcoma
g. Malignant Lymphomas:
- Marginal zone B-cell lymphoma of MALT( Mucosal Associated Lymphoid Tissues)
- Mantle cell lymphoma
- Diffuse large B-cell lymphoma
- Others
h. Other tumors
i. Secondary tumors
Classification of Tumors of Stomach – howMed
Tumors of stomach may be classified, based on histology, into:
1. Epithelial tumors:
a. Intraepithelial neoplasia -Adenoma
Adenocarcinoma of Stomach
b. Carcinoma:
i. Adenocarcinoma:
ii. Papillary adenocarcinoma iii. Tubular adenocarcinoma iv. Mucinous adenocarcinoma v. Signet-ring cell carcinoma vi. Adenosquamous carcinoma vii. Squamous cell carcinoma viii. Small cell carcinoma ix. Undifferentiated carcinoma
x. Others
c. Carcinoid tumor (Well differentiated endocrine neoplasm)
2. Non-Epithelial:
a. Leiomyoma b. Schwannoma c. Granular cell tumour d. Leiomyosarcoma
e. Gastrointestinal Stromal tumour:
f. Kaposi’s sarcoma
g. Malignant Lymphomas:
h. Other tumors
i. Secondary tumors