A minor complication of cryosurgery--occlusion of the cervical canal.

In a series of 145 patients who underwent cryosurgery of the cervix uteri, six cases (4 per cent) were found with occlusion of the cervical canal. The patients complained of constant pains resembling labor. Inspection of the cervix uteri showed necrosis covering the orificium externum uteri. On removal of the necrotic area there was a discharge of watery fluid. The patients were then free of pain.