Collagenous colitis without diarrhoea at diagnosis - a follow up study.
OBJECTIVE
Chronic watery diarrhoea is a classical symptom of collagenous colitis (CC). However, in some cases, the typical histologic findings of CC can be found in patients without this symptom. In this study we have performed a follow up on patients with a confirmed histological diagnosis of CC without the typical symptom watery diarrhoea.


PATIENTS AND METHODS
A structured medical record follow-up was performed on the subgroup of patients without watery diarrhoea but diagnosed with the typical CC histologic appearance in a previous study of microscopic colitis.


RESULTS
At follow up after a median time of 8 years (range: 0.33-12 years), five of these fifteen patients developed bowel symptoms but only two developed characteristic CC symptoms with watery diarrhoea.


CONCLUSION
The majority of patients without chronic watery diarrhoea at diagnosis remained free from this symptom during follow up and only in a few cases symptoms attributed to CC developed.
['Thörn|Mari|M|', 'Sjöberg|Daniel|D|', 'Holmström|Tommy|T|', 'Rönnblom|Anders|A|']
D000328:Adult D000368:Aged D000369:Aged, 80 and over D046729:Colitis, Collagenous D003113:Colonoscopy D003967:Diarrhea D005260:Female D005500:Follow-Up Studies D006801:Humans D008297:Male D008875:Middle Aged
Collagenous colitis bowel symptoms clinical course epidemiology