Hydraulic fracturing (HF), as a stimulation technique in petroleum engineering, has made possible the oil production from reservoirs with very low permeability. The combination of horizontal drilling and multiple HF with various perforation angles has been widely used to stimulate oil reservoirs for economical productions. Despite the wide use of HF, there are still ambiguous aspects that requi...

BACKGROUND Perforation peritonitis is the most common surgical emergency encountered by the surgeons all over the world as well in Pakistan. The spectrum of etiology of perforation peritonitis in tropical countries continues to differ from its western counter part. This study was conducted at Dow University of health sciences and Civil Hospital Karachi (DUHS & CHK) Pakistan, designed to highlig...

BACKGROUND AND AIM Colonoscopic perforation is a rare complication. We sought to determine its risk factors in patients with inflammatory bowel disease (IBD). MATERIALS AND METHODS The study group consisted of 19 IBD patients who had perforation secondary to diagnostic or therapeutic colonoscopy from January 2002 to October 2010. The control group consists of 76 IBD patients undergoing colono...

Abstract Introduction Simultaneous pneumoperitoneum and pneumomediastinum is a rare radiological finding. There are only 6 reported cases in the literature of this being due to diverticular perforation. Case report A 78-year-old male presented with worsening shortness breath, lower back pain abdominal pain. Past medical history included myasthenia gravis, for which he took pyridostigmine. compu...

INTRODUCTION Although perforation of the esophagus, in the anterior cervical spine fixation, is well established, cases with delayed onset, especially cases that present pseudodiverticulum, are not common. In addition, management of the perforation in this situation is debated. CASE REPORT Delayed esophageal pseudodiverticulum was managed in two patients with a history of anterior spine fixat...

BACKGROUND Esophageal perforation is a serious, but rare complication of high mortality following the endoscopic submucosal dissection (ESD) procedure. The aim of this study is to evaluate the efficacy and safety of nonsurgical treatment of esophageal perforations caused by ESD based on our clinical experience. METHODS From January 2009 to November 2013, 8 patients were diagnosed with endosco...

Focal intestinal perforation (FIP) has long been described in the pediatric literature. Peritoneal drainage (PD) is widely used as treatment for focal intestinal perforation. Here we report a premature infant that underwent PD on day of life 9 for a FIP. The infant recovered well from this episode and was discharged home without known sequelae. Subsequently, the same patient presented 16 months...

BACKGROUND Pyoderma gangrenosum (PG) is a skin condition characterized by necrotic ulcers and most commonly occurs on the legs in association with inflammatory bowel disease and rheumatoid arthritis; however, PG rarely involves the head and neck, and very rarely causes nasal septal perforation. OBJECTIVE Here, we describe a case report of PG causing nasal septal perforation in a 71-year-old m...