The Department of Gynecology of the Cancer Institute Hospital diagnosed and treated 226 cases of stump cancer between 1950 and 1983. We obtained the following results. 1) The age of the subjects ranged from 32 to 78 years. The highest frequency age group was 50 to 59 (44.7%) with 101 cases, giving an average age of 53.8 years. 2) Subtotal hysterectomy was performed at ages 23 to 64, the average age being 39.5. 105 patients (46.5%) underwent subtotal hysterectomy between the ages of 40 and 49. 3) The major reasons for subtotal hysterectomy were myoma in 181 cases (80.1%), benign ovary tumor in 12 cases (5.3%), ectopic pregnancy in 10 cases (4.4%), cystic mole in 6 cases (2.7%) and cesarean section in 5 cases (2.2%). 4) Major subjective symptoms of stump cancer were metrorrhagia in 164 cases (72.6%) and fluor in 30 cases (13.3%). 24 cases (10.6%) were asymptomatic. 5) The hystological types were squamous cell carcinoma in 208 cases (92.0%), adenocarcinoma in 17 cases (7.5%), and adenosquamous cell carcinoma in 1 case (0.4%). These ratios were similar to those of cervical cancer cases treated over the same period. 6) The stages of cancer advancement were stage 0 in 24 cases (10.6%), stage I in 51 cases (22.6%), stage II in 96 cases (42.5%), stage III in 50 cases (22.1%), and stage IV in 5 cases (2.2%). The percentage of stage 0 cases was lower than that for general cervical cancer of the uterus.(ABSTRACT TRUNCATED AT 250 WORDS)