Gastric carcinoma represents only 0.05% of malignant paediatric gastrointestinal tumours. This condition is associated with a poor prognosis because its rarity and non-specificity of the symptoms usually delay its diagnosis. The authors present a 16-year-old girl with a poorly differentiated gastric carcinoma (signet-ring-cell type) with bilateral ovarian metastases who died of peritoneal carcinomatosis despite extensive surgery and chemotherapy. The epidemiological, clinical, and pathological features of gastric carcinoma in childhood are discussed.