Hidden in Plain Sight: Delayed Diagnosis of Poorly Cohesive Gastric Carcinoma in a Young Male Patient.

Poorly cohesive gastric adenocarcinoma is classified as a diffuse type of gastrointestinal tract tumor composed of undifferentiated cells with an inherent propensity for aggressive behavior. Recent trends in surveillance indicate that gastric cancer (GC) is affecting younger adults and is distinct from GC that occurs later in life. Early-onset gastric cancer (EOGC) is associated with various environmental and genetic factors. Younger patients with recurrent pyrosis may warrant earlier surveillance in light of this worrisome trend. Herein, we discuss a young male patient who developed non-hereditary, poorly cohesive gastric adenocarcinoma with an extended history of pyrosis despite long-term acid suppression and triple therapy for ().