초록
A six-year old bitch pregnant with prolonged gestation over about one month was ovariohysterectomied. The bitch was proved to be normal by physical and biochemical examination and had not a purulent vaginal discharge. A large firm mass was palpated in left caudoventral abdomen. Radiography identified the mass as a fetus. The abdominal ultrasono-graphy identified the fetus was dead. Caesarian section through the median raphe over linea alba was attempted. Adhensions were found between the uterus, stomach, spleen, urinary bladder, and abdominal viscera. Two fragments of bone were found in the abdominal cavity because of rupture of left uterine horn. Radiography and ultrasonography were proved to be of use to diagnose prolonged fetal mummification. Ovario-hysterectomy was considered to be choice of treatment to remove the prolonged mummified fetus.