BACKGROUND AND AIMS Angiosperms with simple vessel perforations have evolved many times independently of species having scalariform perforations, but detailed studies to understand why these transitions in wood evolution have happened are lacking. We focus on the striking difference in wood anatomy between two closely related genera of Adoxaceae, Viburnum and Sambucus, and link the anatomical d...

Purpose. We present our experience with laparoscopic colorrhaphy as definitive surgical modality for the management of colonoscopic perforations. Methods. Over a 17-month period, we assessed the outcomes of consecutive patients presenting with acute colonoscopic perforations. Patient characteristics and perioperative parameters were tabulated. Postoperative outcomes were evaluated within 30 day...

OBJECTIVES In this study, a modified surgical method was carried out to repair large nasal septal perforations with a galeal pericranial flap using endoscopic technique. MATERIALS AND METHODS Six adult human cadavers were dissected by applying the classic open rhinoplasty technique. Large perforations were created in the septal cartilages. To repair the perforations, we prepared galeal pericr...

Introduction: Perforations of the gastrointestinal tract are frequently encountered surgical emergencies associated with high morbidity and mortality. This study was conducted to evaluate different spectrum perforations, their presentations, mode surgery, complications factors mortality.
 
 Methods: an analytical cross-sectional in Surgical Gastroenterology Department at College Medic...

Background: The location of the endodontic perforation has shown a strong correlation with healing process and successful outcome. aim this study was to determine prevalence iatrogenic perforations according their affected root surfaces. Materials methods: Over period 7 years, 100 cases were recorded from digital radiographs each case. classified following criteria: (1) – cervical, furcation,...

nosis, treatment and follow-up of colorectal pathologies. However, this invasive procedure is performed with some risk of hemorrhage, perforation and even death. 2 The incidence of perforation is reported to range between 0.2% to 0.8% for diagnostic colonoscopy and from 0.15% to 3% for therapeutic colonoscopy. With increasing numbers of colonoscopies being performed for screening purposes, this...

Mice deficient in plasminogen, the precursor of plasmin, show completely arrested healing of tympanic membrane (TM) perforations, indicating that plasmin plays an essential role in TM healing. The activation of plasminogen to plasmin is performed by two plasminogen activators (PAs), urokinase-type PA (uPA) and tissue-type PA (tPA). To elucidate the functional roles of PAs in the healing of TM p...

OBJECTIVE: Perforations of the tympanic membrane are treated with various surgical techniques and materials, all of which have advantages and disadvantages. Although autologous temporalis fascia is most often used to repair a perforated tympanic membrane, a fat graft can also be used, and fat myringoplasty (FM) is a simple and cost-effective technique. The aim of our study was to determine the ...

BACKGROUND The objective is to compare primary repair vs intestinal resection in cases of intestinal typhoid perforations. In addition, we hypothesised the usefulness of laparostomy for the early diagnosis and treatment of complications. METHODS 111 patients with acute peritonitis underwent emergency laparotomy: number of perforations, distance of perforations from the ileocaecal valve, and t...

Purpose This study compared the diagnostic accuracy of cone-beam computed tomography (CBCT) scans obtained with 2 CBCT systems with high- and low-resolution modes for the detection of root perforations in endodontically treated mandibular molars. Materials and Methods The root canals of 72 mandibular molars were cleaned and shaped. Perforations measuring 0.2, 0.3, and 0.4 mm in diameter were ...