Gastric Diffuse Large B-Cell Lymphoma in an Adolescent: A Case Report.

Non-Hodgkin lymphoma (NHL) is the 11th most common cancer worldwide and the 4th most common pediatric cancer. The GI tract is the most common extranodal site of NHL, making up about 30-40% of extranodal cases. The median age at diagnosis for gastrointestinal NHL (gNHL) is around 61.