BACKGROUND Delay in diagnosis and treatment of perforated appendicitis may cause life-threatening complications.The aim of this study was to determine and compare pre-operative total and direct bilirubin levels incases of simple and perforated acute appendicitis in order to improve the clinical decision making. METHODS This prospective observational study included eighty patients who underwen...

INTRODUCTION Gastrointestinal stromal tumours (GISTs) are the most common connective tissue neoplasms of the gastrointestinal tract, the most common clinical presentation of which is with abdominal pain or gastrointestinal bleeding. METHODS We describe a case of a perforated gastric GIST as well as reviewing the relevant published literature. RESULTS A 51-year-old woman presented to the acu...

A sacrificial-post templating method is presented for directing block copolymer self-assembly to form nanostructures consisting of monolayers and bilayers of microdomains. In this approach, the topographical post template is removed after self-assembly and therefore is not incorporated into the final microdomain pattern. Arrays of nanoscale holes of different shapes and symmetries, including me...

Eichhornia azurea and E. crassipes are morphologically easy to distinguish, however, their seeds similar differentiated only by size, which makes identification difficult, especially when collected directly from the seedbank. We identified characters for distinguish of these species through macrosculpture analyzes seed coat (size, shape, epidermal pattern, structure primary secondary microsculp...

PURPOSE This study evaluated the feasibility of a laparoscopic approach in children with generalized peritonitis secondary to perforated appendicitis. MATERIALS AND METHODS We retrospectively analyzed the medical records of patients who underwent laparoscopic appendectomy with drainage for generalized peritonitis secondary to perforated appendicitis at our hospital between September 2001 and ...

We present an experimental and theoretical study of the optical transmission of a thin metal screen perforated by two subwavelength slits, separated by many optical wavelengths. The total intensity of the far-field double-slit pattern is shown to be reduced or enhanced as a function of the wavelength of the incident light beam. This modulation is attributed to an interference phenomenon at each...

Cribriform is a histopathological term used to describe a neoplastic epithelial proliferation in the form of large nests perforated by many quite rounded different-sized spaces. This growth pattern may be seen in carcinomas arising in different organs, and shows important prognostic implications. Therefore, recent data in literature suggest that cribriform carcinoma is a histologically and clin...

PURPOSE This study aimed to determine whether routine urinalysis may serve as a tool in discriminating between acute appendicitis and perforated appendicitis in children. BASIC PROCEDURES We prospectively collected 357 patients with clinically suspected acute appendicitis. Urinalysis was performed in patients with clinically suspected acute appendicitis before surgical intervention. Routine u...

PURPOSE Perforations are rare but serious complications of colorectal cancer, with mortality rates of 30 to 40 percent. The aim of this retrospective study was to investigate possible indicators of prognosis and causes of death and to evaluate the risk of this complication by comparing results in perforated tumors with uncomplicated cancers or large-bowel perforations attributable to benign cau...

Most models for predicting the acoustic response of perforated panels are based on the assumption that there is no interaction between the holes. The common way of taking into account the perforates effects is the use of Fok's functions. The few papers that deal with these effects study the case of low sound pressure levels. This paper investigates the Holes Interaction Effects (HIE) of perfora...