Upper gastrointestinal tract cancers are one of the most important leading causes of cancer death worldwide. Diagnosis at late stages always brings about poor outcome of these malignancies. The early detection of precancerous or early cancerous lesions of gastrointestinal tract is therefore of utmost importance to improve the overall outcome and maintain a good quality of life of patients. The ...

Cancers of the upper aero-digestive and gastrointestinal tract are one of the major causes of mortality around the world. DNA repair genes play a vital role in preventing carcinogenesis by maintaining genomic integrity. Polymorphisms in the nucleotide sequence of DNA repair genes are often reported to be associated with an increased risk for different cancers. The OGG1 gene encodes the enzyme 8...

background and aims: in diagnosing inflammatory bowel disease, one of diagnostic way is upper gastrointestinal endoscopy, which helps in differential diagnosis of unspecified colitis as well. the aim of this study was to investigate the necessity of upper gastrointestinal endoscopy in patients with inflammatory bowel disease.   materials and methods: in this descriptive cross-sectional study, 3...

although gastrointestinal involvement by metastatic malignant melanoma is common but primary gastrointestinal (gi) melanoma has been reported in rare cases. in this study we report two cases of primary gastrointestinal malignant melanoma that one of them is a known case of neurofibromatosis type 1(nf1). both cases showed no evidence of any lesions in skin and eye. malignant melanoma of gi tract...