Stomach pain caused by masked hydronephrosis.
D000005:Abdomen; D000006:Abdomen, Acute / Q000209:etiology*; D034841:Abdominal Cavity; D015746:Abdominal Pain; D006801:Humans; D006869:Hydronephrosis / Q000175:diagnosis*; D013270:Stomach
ABDOMEN, ACUTE/etiology and pathogenesis; HYDRONEPHROSIS/diagnosis