[Rare case of an adult teratoma of the stomach (author's transl)].

The teratoma is a dysgenetic tumor consisting of tridermal differentiation products. The most common classification is made according to maturity - benign adult teratoma and malign nonmature embryonal teratoma. In the case demonstrated, a 15-year-old male suffers from tiredness, paleness and pains in the epigastrium. The radiological examination showed a tumor in the size of a fist with a number of teeth located partly within the stomach. The histological findings after operation confirmed the diagnosis of a coetaneous (= adult) gastric teratoma. The discussion shows that all cases of gastric teratoma published until 1972 are male, in 77% under the age of 1 year, in 13% under the age of 10, and only in 10% over the age of 10 years.