The major objective of diagnostic laparotomy in Hodgkin's disease is to define the extent of involvement not detectable by nonoperative means. Fifty patients in this institution had operative staging procedures; six for recurrent disease three to 11 years after initial therapy. Twenty-four patients had nodular sclerosis, 23 mixed cellularity, and three had other types. The clinical stages were advanced in 13 patients and decreased in seven patients. Two patients (both had mixed cellularity and systemic symptoms) had positive wedge biopsy of the liver, whereas direct needle biopsy was negative. Nineteen spleens contained Hodgkin's disease but only three could be palpated on physical examination. About half the patients with abnormal lymphangiograms had positive periaortic nodes; lymphangiogram had a false negative rate of 12%. Additional procedures performed included appendectomy, oophoropexy, and resection of Meckel's diverticulum. There was no mortality and only one case had severe postoperative Salmonella septicemia. Our findings are comparable with those reported in the literature.