SUMMARY Castleman's disease is a rare condition. In its classic form Castlema's is a solitary lesion, two third of patients have tumour like mass in the mediastinum. Extrathoracic sites also could be affected including those where lymph nodes normaly occur ancl rarely tissues where lymph nodes are not found. More recently there have been several reports of patients with multi centeric involvem...

The modeling of thermal reaction furnaces of Sulfur Recovery Units (SRUs) is a rather complex problem since it involves different modeling scales such as the kinetic/molecular scale, the reactor scale, and the chemical process scale. This work introduces the multi-scale modeling approach to characterize the kinetic and reaction engineering scales for the thermal section of SRUs, involving the r...

INTRODUCTION Rectal mucosal prolapse syndrome, histologically characterized by fibromuscular obliteration in the lamina propria, hyperplastic glands and thickened muscularis mucosa, causes rectal bleeding. Sjögren's syndrome is an autoimmune exocrinopathy that chiefly destroys the salivary and lacrimal glands by lympho-plasmacytic infiltration. Although various gastrointestinal manifestations h...

stool for 2 months. He had been diagnosed as having mantle cell lymphoma of the spleen 8 years ago, and complete remission was achieved after chemotherapy. A computed tomography (CT) scan of the abdomen, taken to evaluate the intraabdominal lymph nodes, revealed a rectal mass with perilesional lymphadenopathy, A primary rectal cancer was suspected (●" Fig. 1, 2). Colonoscopy revealed an ulcerat...

∗ Corresponding author. E-mail address: [email protected] (A. Peixoto). endoscopic submucosal dissection of a rectal adenoma in 2010 and hemorrhoidal disease, being submitted to two rubber ligations 16 days before. He was not under anticoagulant or antiplatelet therapies. On admission, he was hypotensive (blood pressure 95/45 mmHg), with cardiac rate of 90 bpm. Blood analysis showed a 4 g/d...

A 52 year old male presented with changes in bowel movements, and a mass was detected on digital rectal exam. Both CT and MRI revealed a large pelvic and gluteal mass filling the pelvic cavity displacing the adjacent pelvic structures. After surgical removal, pathology revealed solitary fibrous tumor; a rare neoplasm uncommonly discovered in the thorax, and even less commonly in extrapleural lo...

Solitary infantile myofibroma with visceral involvement is very rare. We present an unusual case of a solitary myofibroma with abdominal localization in a 1-day-old female neonate who presented with severe anemia and rectal bleeding. A bleeding myofibroma was found, located in the wall of the jejunum, and totally resected. In case of a solitary lesion, treatment is relatively easy and effective...

Pancreatic metastasis from colorectal cancer is rare, and there have been only a few reports of its preoperative diagnosis by endoscopic ultrasound-guided fine needle aspiration (EUS-FNA) with immunohistochemical staining. We herein describe the case of a 77-year-old woman in whom a solitary mass in the pancreatic tail was detected 11 years after rectal cancer resection. The patient also had a ...