[Metastatic small intestine carcinoma--delayed diagnosis due to misinterpretation of diagnostic imaging and symptom confusion due to Bechterew disease and duodenal ulcer].

Misinterpretations of sonographic and computed tomography scans and reduced sensitivity to pain of a patient suffering from Bechterew's disease and duodenal ulcer caused delayed diagnosis of metastasized carcinoma of the small intestine.