Unsuspected ileal stenosis causing obscure GI bleeding in patients with previous abdominal surgery--diagnosis by capsule endoscopy: a report of two cases.

Peri-anastomotic ulcerations may occur in patients with previous abdominal surgery. They may present only with obscure GI bleeding. We report two cases in whom capsule endoscopy identified postsurgical stenoses with ulcers as the cause of obscure GI bleeding. Case 1. A 57-year-old male operated on in 1970 for a post-traumatic diaphragm hernia followed by displacement of the caecum in the upper left abdominal quadrant. Case 2. A 32-year-old female with a salpingectomy for tuberculosis (1978) followed by segmental ileal resection for intestinal obstruction. Both patients had undergone extensive work-up including bidirectional endoscopies and enteroclysis with negative results. Capsule endoscopy with the GIVEN diagnostic system was done. Ileal stenoses with mucosal ulcers in dilated prestenotic loops were observed in both cases. The capsule was retained at the stenosis site, requiring ileal resection and anastomosis. Pathology reports showed mucosal ulcers. In case 2, tuberculosis was ruled out by tissue and faecal polymerase chain reaction and culture. Ileal stenoses with prestenotic ulcerations causing GI bleeding may occur in patients with previous abdominal surgery. Capsule endoscopy may clarify the diagnosis and shorten the diagnostic work-up. However, these patients should be warned that capsule retention requiring surgery might occur.

TT virus infection in adult beta-thalassemia major patients.

BACKGROUND AND OBJECTIVES: Patients with thalassemia-major are at risk of blood-borne viral infections. TT virus (TTV), a single stranded, circular DNA virus, has recently been found to be associated with acute and chronic hepatitis. The aims of this study were to assess the prevalence of TTV infection in adult patients with transfusion-dependent thalassemia, and to evaluate the clinical significance of TTV. DESIGN AND METHODS: We studied 68 adult patients with thalassemia major, 97% of whom were hepatitis C virus (HCV) antibody positive. TTV DNA was amplified from serum by heminested polymerase chain reaction (PCR). Direct sequencing of PCR products was used to establish TTV genotypes. RESULTS: TTV DNA was detected in 47 patients (69.1%). Sequence analysis of PCR products identified TTV genotype 1b as the most common viral genotype in this group. Patients co-infected by HCV and TTV had a significantly higher histologic grade score than patients with isolated HCV infection (5.1+/-2.7 vs. 2.8+/-1.7, p=0.02) while the stage score was not significantly different. INTERPRETATION AND CONCLUSIONS: TTV is highly prevalent among Italian multiply transfused patients. In these patients TTV viremia appears to affect the necro-inflammatory activity of hepatitis C, though no evidence of an effect on the evolution of fibrosis was found.

[Portal hypertensive gastropathy in patients with cirrhosis of the liver]. / Gastropatia da ipertensione portale nei pazienti con cirrosi epatica.

Portal hypertensive gastropathy (PHG) is characterized by changes in the endoscopic appearance of the gastric mucosa, specific for portal hypertension. The identification of the elementary lesions of PHG allowed the development of a reproducible classification, defining mild and severe pictures, and the execution of a natural history study. This study showed a 80% overall prevalence of PHG in patient with cirrhosis of the liver and a correlation between duration of the disease and development of PHG. PHG has often been shown to be a fluctuating condition, thus suggesting that its pathophysiology is not only related to portal hypertension, but also to other, yet unknown, factors. Bleeding from PHG did not occur in patients with a recent diagnosis of liver cirrhosis. Acute and chronic bleeding occurred in 2.5% and 12% of patients, respectively. The death rate from acute PHG bleeding was lower (12.5%) than the death rate of variceal bleeding (39.1%). Vasoactive drugs can be used in the treatment of acute PHG bleeding. For chronic bleeding, non selective 13-blockers and, if needed, iron, are the treatment of choice. TIPS or surgical portosystemic shunt may be considered for acute or chronic PHG bleeding, if medical treatment fails. Clinical controlled trials are needed to evaluate the efficacy of these or other treatments.