CT-Guided Percutaneous Biopsy of Intrathoracic Lesions

Percutaneous CT-guided needle biopsy of mediastinal and pulmonary lesions is a minimally invasive approach for obtaining tissue for histopathological examination. Although it is a widely accepted procedure with relatively few complications, precise planning and detailed knowledge of various aspects of the biopsy procedure is mandatory to avert complications. In this pictorial review, we reviewed important anatomical approaches, technical aspects of the procedure, and its associated complications.

Helicobacter pylori infection delays ulcer healing in patients operated on for perforated duodenal ulcer.

BACKGROUND: A majority of duodenal ulcers are associated with Helicobacter pylori infection; eradication of the infection improves ulcer healing and reduces the ulcer recurrence rate. However, the frequency of H. pylori infection in patients with perforated duodenal ulcer is not clearly established. We studied the frequency of H. pylori infection in patients with perforated duodenal ulcer and its impact on their clinical presentation. METHODS: All patients presenting with perforated duodenal ulcer underwent emergency laparotomy and simple omental patch repair. Postoperatively they received standard antibiotics for 1-2 weeks along with ranitidine; ranitidine alone was continued thereafter till an endoscopy 4-6 weeks later. Positive rapid urease test along with identification of H. pylori on histology was taken as evidence of H. pylori infection. Patients who received anti-H. pylori therapy or nonsteroidal anti-inflammatory drugs (NSAIDs) postoperatively and/or proton pump inhibitors or antibiotics, during 4 weeks preceding the endoscopy, were excluded. RESULTS: 30 patients (27 men; mean [SD] age 32.9 [9.7 years]) presenting during the period June 1999 to October 2000 were studied. Upper gastrointestinal endoscopy was done 10.9 (6.3) weeks after surgery. Seventeen (56.6%) patients were infected with H. pylori; this group had significantly more men (17/17 versus 10/13 among uninfected) and fewer NSAID users (2/17 vs. 7/13). Median duration of epigastric pain before presentation was 18 weeks in the H. pylori-infected group as compared to one week in the non-infected group (p<0.001). Significantly more patients continued to have epigastric pain after surgery in the infected group (7/17 vs. 0/13). At endoscopy, active duodenal ulcer was present in 13 of 17 patients with evidence of H. pylori infection and none of the noninfected patients (p<0.001). Age, sex, duration between surgery and endoscopy, NSAID use, smoking and maintenance ranitidine use had no impact on ulcer healing after the surgery. CONCLUSIONS: In patients operated on for perforated duodenal ulcer, H. pylori infection was the only significant factor responsible for persistence of ulcer after surgery. We advocate H. pylori eradication therapy in patients operated on for perforated duodenal ulcer.