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Most tumors of the stomach are adenocarcino­mas. Only about 5 per cent are primary lympho­mas of the stomach, and other malignant lesions (e.g., leiomyosarcoma) are rarer still. Since the clinical characteristics and diagnostic measures are similar for all malignant tumors of the stom­ach, this chapter will focus on adenocarcinoma. Benign tumors (e.g., leiomyomas and adenomas) are rarely the cause of symptoms, most often being found incidentally.

• Etiology and Pathogenesis
• DIVERTICULITIS
• Incidence
• Incidence
• NEOPLASMS OF THE GASTROINTESTINAL TRACT
• Treatment and Prognosis
• Diagnosis
• CARCINOMA OF THE STOMACH
• Pathology
• CARCINOMA OF THE ESOPHAGUS
• Complications
• Complications
• Etiology and Pathogenesis
• ISCHEMIC COLITIS
• Clinical Manifestations