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BACKGROUND The purpose of this study was to assess the prevalence of other neoplasms in patients with gastrointestinal stromal tumors (GISTs) and to compare clinical and histopathological data in patients with a GIST and accompanying neoplasms and in patients with GIST only. METHODS The analysis encompassed 82 patients with a GIST from among 330 300(More)
BACKGROUND Intraductal oncocytic papillary neoplasms (IOPN) are rare tumors of the pancreatic and biliary ductal system. It is not absolutely clear if the molecular and clinicopathologic characteristics of IOPN differ significantly from other related lesions, namely intraductal papillary mucinous neoplasms (IPMN). Therefore it is not clear if it is(More)
AIM To develop a method of gross examination of pancreaticoduodenectomy specimens with pancreatic ductal adenocarcinoma, allowing adequate assessment of the entire pancreatic surface as a surgical margin, which would not affect the lymph node yield. METHODS We retrospectively compared the R1 rates (i.e., proportions of patients with microscopic residual(More)
Colloid carcinoma (CC) of the pancreas is a histopathological variant of ductal adenocarcinoma, which is characterised by the presence of large pools of extracellular mucin, containing neoplastic cells. The mucin component comprises at least 50% of CC (according to the definition by the World Health Organization) or at least 80% of the tumour (according to(More)
Serous neoplasms (SN) of the pancreas account for 1-2% of all pancreatic tumours. Six morphological variants of SN were previously recognized: serous microcystic (cyst)adenoma, serous macrocystic (cyst)adenoma, von Hippel-Lindau-associated serous cystic neoplasm, solid serous adenoma/neoplasm, mixed serous-neuroendocrine neoplasm and serous(More)
Authors report two cases of benign, osteogenic neoplasms of the maxilla in children which defined as cemento-ossifying fibroma and juvenile cemento-ossifying fibroma. Difficulty in diagnosis of the tumor is indicated. The importance of clinical data as well as radiology and histopathology examination for a proper diagnosis is indicated. Review of literature(More)
AIM To assess the usefulness of two independent histopathological classifications of rectal cancer regression following neo-adjuvant therapy. METHODS Forty patients at the initial stage cT3NxM0 submitted to preoperative radiotherapy (42 Gy during 18 d) and then to radical surgical treatment. The relationship between "T-downstaging" versus regressive(More)
BACKGROUND/AIMS The aim of this report is to describe two cases of lymphoepithelial cysts (LEC) of the pancreas: 1. LEC coexisting with primary gastric lymphoma, 2. an incidental finding of LEC during imaging examination. RESULTS 1. A 47-year old man complaining of epigastric pain showed a 2 x 1.5 cm cyst of the pancreatic head on computed tomography (CT)(More)
There are a few studies concerning epidemiology of pancreatic ductal adenocarcinoma (PDAC) in the Polish population. Analysis of age distribution patterns of patients with different types of cancer may be useful for studying their specific biology. In the present study we aimed to describe age distribution patterns of 580 patients with PDAC diagnosed in one(More)
The aim of our study was to identify and describe potential inconsistencies between two alternative staging systems of pancreatic neuroendocrine neoplasms (pNENs)--the European Neuroendocrine Tumor Society (ENETS) system (2006) and the American Joint Committee on Cancer/Union for International Cancer Control (AJCC-UICC) system (2010). To address this issue,(More)