Gastrointestinal stromal tumors (GISTs) are rare tumor of the gastrointestinal tract. GISTs occur in the entire gastrointestinal tract and may also arise from the retroperitoneum, omentum and mesenteries. They are originated from gastrointestinal pacemaker cells (Cajal's interstitial cells) and range from benign tumors to sarcomas at all sites of occurrence. Diagnosis of GIST could be deceptive...

Neoplasms of the appendix are rare, accounting for less than 0.5% of all gastrointestinal malignancies and found incidentally in approximately 1% of appendectomy specimen. Carcinoids are the most common appendicular tumors, accounting for approximately 66%, with cystadenocarcinoma accounting for 20% and adenocarcinoma accounting for 10% [1]. We present a case of adenocarcinoma of appendix prese...

BACKGROUND Bleeding from small bowel neoplasms account for 1-4% of cases of upper gastrointestinal haemorrhage. Renal cell carcinoma constitutes 3% of all adult malignancies and often presents insidiously. Consequently 25-30% of patients have metastases at the time of diagnosis. Gastrointestinal bleeding from renal cell carcinoma metastases is an uncommon and under-recognised manifestation of t...

Currently available data on prognostic implication of additional neoplasms in GIST miss comprehensive information on patient outcome with regard to overall or disease specific and disease free survival. Registry data of GIST patients with and without additional neoplasm were compared in retrospective case series. We investigated a total of 836 patients from the multi-center Ulmer GIST registry....

Although the majority of mesenchymal lesions of the gastrointestinal tract are neoplastic in nature, but nonneoplastic reactive processes may also involve the gastrointestinal tract and mesentery. Some more aggressive neoplasms located in same area, such as fibromatosis or gastrointestinal stromal tumors may be cause of diagnostic confusion. Reactive nodular fibrous pseudo tumor (RNFP) of the g...

Primary gastrointestinal (GI) lymphomas constitute less than 8 % per cent of total gut neoplasms. Most of them are Non-Hodgkin’s type of Lymphomas. Among the Extra-nodal tissues Gastro-intestinal tract is the most common site followed by Head and Neck region, Central nervous system, Thorax, Spleen, Adrenal glands, Uro-genital tract, skin and Bone. The stomach is the most common location of GI l...

Gastrointestinal stromal tumors (GISTs) are rare neoplasms of the gastrointestinal tract. Their incidence in the esophagus is 1%-3%. Never has a GIST been documented to directly invade the lung. We report a primary esophageal GIST with direct invasion into the lung parenchyma, presenting predominantly with respiratory symptoms. We include a retrospective literature review. Although the principl...

Extramedullary plasmacytomas are rare among plasma cell neoplasms and primary gastrointestinal plasmacytomas are even rarer and many of the cases are not detected until the disease advances. We reported a case of extramedullary plasmacytoma of stomach in a 46 yr old female who presented with complaints of dyspepsia and melaena. Upper gastrointestinal endoscopy revealed a nodule in the pylorus r...

Mastocytoma is one of the most common skin tumours in dogs. It characterised by a specific course, unpredictable behaviour, and prognosis. This tumour dangerous because it mimics external signs other neoplasms, from less-threatening lipoma to cancer. The purpose study conduct pathomorphological verification classification neoplasia dogs diagnosed during clinical examination establish features m...

Tegafur is a prodrug of 5-fluorouracil (5-FU) with a similar spectrum of antitumor activity. It is used in the treatment of advanced gastrointestinal neoplasms. Over 5-FU, tegafur has the advantage of oral administration and less hematologic toxicity. Gastrointestinal toxicity is its main dose-limiting factor. The cutaneous adverse effects of tegafur include mucositis, photosensitivity, diffuse...