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Patients subjected to intensive follow-up have recurrence diagnosed earlier, and have more operations for recurrence, but the survival results suggest that any major improvement by intensive follow-up is unlikely.

The lesser reduction in mortality from CRC of 11% compared to 18% after 5 screening rounds may be explained by the decrease in the number screened. Efficacy in those screened supports the introduction of countrywide screening in Denmark, but it must be ascertained that acceptability, proportion of early CRC and logistics all reach the same standard as in the randomized trial.

Three treatments for chronic pilonidal disease were compared in a randomized trial. Healing without formation of new sinuses occurred equally frequent after excision (E), excision with suture (E + S) and excision with suture under cover with clindamycin (E + S + C). The times of healing were significantly shorter after E + S (median 14 days, n = 29) than after E (64 days, n = 29) and tended to be even shorter after E + S + C (11 days, n = 30). Recurrence rates within 3 years amounted to 13 per cent after E, 25 per cent after E + S and 19 per cent after E + S + C, but the total time of healing after initial surgery as well as excision of recurrences was significantly shorter after E + S than after E and tended to be even shorter after E + S + C.