Small intestine bacterial overgrowth in patients with chronic pancreatitis Background: Previous reports describe 30-40% of small intestine bacterial overgrowth (SIBO) in patients with chronic pancreatitis (CP), SIBO is a cause of persistent symptoms in this group of patients even when they are treated with pancreatic enzymes. Aim: To asses the frequency of SIBO in patients with CP. Patients and methods: We studied 14 patients with CP using an hydrogen breath test with lactulose to detect SIBO, a nonabsorbable carbohydrate, whose results are not influenced by the presence of exocrine insufficiency. Main symptoms and signs were bloating in 9 (64%), recurrent abdominal pain in 8 (57%), intermittent diarrhea in 5 (36%) and steatorrhea in 5 (36%). At the same time we studied a healthy control group paired by age and sex. Results: SIBO was present in 13 of 14 patients with CP (92%) and in 1 of 14 controls (p<0.001). The only patient with CP and without SIBO was recently diagnosed and had minimal morphologic alterations in computed tomography and endoscopic pancreatography. Conclusions: SIBO is common in CP and may be responsible for persistent symptoms. Proper diagnosis and treatment could alleviate symptoms and improve quality of life (Rev Méd Chile 2008; 136: 976-80).

Autoimmune pancreatitis. Report of 10 cases Background: Autoimmune pancreatitis is a special form of chronic pancreatitis, more common in men and usually presenting as obstructive jaundice or abdominal pain. It may be associated with other immunological disorders and sometimes it is possible to find positive serological markers. Typical images show pancreatic enlargement with focal or diffuse stenosis of the pancreatic duct but sometimes it presents as a focal pancreatic mass, that is difficult to differentiate from pancreatic carcinoma. Aim: To report ten cases of autoimmune pancreatitis. Material and Methods: Retrospective review of clinical records of 10 patients aged 26 to 56 years (six males) with autoimmune pancreatitis. Results: The clinical presentation was obstructive jaundice in six cases, acute pancreatitis in two, persistent increase in serum amylase and lipase in one, and permanent abdominal pain and weight loss in one. On imaging studies, a circumscribed mass was found in six patients. An endoscopic retrograde colangiopancreatography was performed in four patients showing an abnormal pancreatic duct in all. Six patients were operated and tissue for pathological study was obtained in five, showing inflammatory infiltration. Five patients were treated with steroids with a good clinical response. Conclusions: Autoimmune pancreatitis must be borne in mind in the differential diagnosis of pancreatic lesions.

Background: The prevalence of celiac disease (CD) is unknown in (Rev Méd Chile 2005; 133: 1317-21).

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