Radiology Diagnostics of Neuroendocrine Tumors of the Pancreas with Cystic Transformation of Structure
Purpose. Assessment and analysis of preoperative examination of patients with cystic transformation of neuroendocrine tumors (NET) of the pancreas according to the non-invasive radiology imaging. Materials and methods. 76 patients with verified NET were examined and treated in the Institute of surgery in the period from 1999 to 2009. The tumors showed cystic cavities of varying degree in 6 cases (7.9%) according to morphological studies. There were women (47 to 79 years (mean age - 55.7 years) in all cases. Preoperatively patients performed: ultrasound, spiral computed tomography (SCT) and magnetic resonance imaging (MRI) with bolus contrast enhancement. Results. The criteria of radiology NET with cystic transformation of the structure are: a rounded, usually large, cystic-solid hypervaskular neoplasm, as evidenced by the presence of arteries and veins in the solid part of the tumor with duplex scanning and a significant accumulation of contrast substance at SCT in arterial phase with a slight decrease in venous and delayed phases, and similarly with MRI. The contents of cystic cavities in the same formation varies in density due to the presence of more or less hemorrhagic component. These formations is also characterized by a draft, defined as two-layer content with a fairly clear boundary, which moves in polyposition radiology study. Conclusion. Radiology can diagnose NET with cystic transformation of the structure and to differentiate them from other cystic formations of the pancreas.