From 1971 to 1977 in Zaria, Nigeria, orchidectomy was performed on 341 men, mostly in the third to sixth decades of life. The testis itself was diseased only in 21% of cases. Torsion of the spermatic cord with testicular infarction occurred in 11% and cancer was present in less than 2%. Orchidectomy was performed therapeutically in 5% of the patients. The major causes for testicular resection were complicated and large inguinal herniae and hydroceles. These two conditions are a source of socio-economic hardship and considerable morbidity in a farming population. It would thus be worth while to include facilities for surgery of small herniae and hydroceles in plans for rural health care.