MALT Lymphoma
46 year-old woman with several
weeks of dysphagia (difficulty swallowing) and dyspepsia (indigestion).
Endoscopy revealed this bilobed mucosal swelling in the proximal gastric body,
which was soft and grossly appeared benign. Forceps biopsies showed a non-diagnostic
lymphocytic infiltrate; more extensive biopsy with a snare wire confirmed
lymphocytic lymphoma. Histology on the resected specimen was consistent with a
low grade B cell malignant lymphoma of the mucosa associated lymphoid tissue
(MALT) type.
83 year-old woman with
asymptomatic iron-deficiency anemia. Endoscopy demonstrated several small antral
gastric ulcers with raised surrounding mucosa. Biopsies revealed a dense
lymphoid infiltrate, lymphoepithelial lesions with atypical lymphoid cells
permeating glandular epithelium, consistent with a low-grade malignant lymphoma
of mucosa-associated lymphoid tissue (MALT). No Helicobacter pylori were
identified.