[Splenic artery aneurysm masked by postcholecystectomy syndrome]. / Anevrizma selezenochnoi arterii pod maskoi postkholetsistéktomicheskogo sindroma.

Visceral artery aneurysms appear to belong to uncommon and potentially lethal vascular diseases. They are usually revealed accidentally during an ultrasonographic examination, magnetic resonance imaging, or computed tomography. Described in the article is a clinical case report concerning a sacciform aneurysm of the splenic artery, detected in a 53-year-old woman presenting with postcholecystectomy syndrome and followed up for abdominalgia by therapeutists and gastroenterologists. Timely performed radiodiagnosis (including multispiral computed tomography and angiography of the abdominal vessels) made it possible not only to detect the aneurysm, having thus verified the volumetric formation previously found on ultrasonographic examination, but to take adequate measures aimed at preventing rupture of the aneurysm and consisting in endovascular occlusion of the aneurysmatic cavity with metal spirals. Lack of complete clarity in the understanding of the mechanisms of the origin of and no distinctly defined therapeutic-and-diagnostic algorithm for visceral artery aneurysms dictate the necessity to continue collecting and generalizing clinical case reports regarding this rarely encountered vascular pathology.

[Prognostic factors influencing results of the surgical treatment of pancreatic cancer]. / Prognosticheskie faktory, vliiaiushchie na rezul'taty khirurgicheskogo lecheniia pri rake podzheludochnoi zhelezy.

In patients with carcinoma of the pancreas 128 gastropancreatoduodenal resections (GPDR), 15 distal resections of the pancreas and 3 pancreatectomies were performed. After GPDR 5-year survival was 12%, the survival median was 24.3 months. Only one patient is living 6 years after left-sided resection and pancreatectomy. Long-term results of the operative treatment for carcinoma of the pancreas depended on the amount of regional metastases, degree of differentiation of the tumor, its size and invasion into the vessels. The long-term results were considerably worse if the tumor was localized in the uncinate process, body and tail of the pancreas. The 5-year survival was noted mainly in patients with the 0 and I stages of the disease. It shows the early diagnostics to be necessary.

[Crystalline and molecular structure of the K+-complex of meso-valinomycin, cyclo(-(D-Val-L-Hyi-L-Val-D-Hyi)3-).KAuCl4]. / Kristallicheskaia i molekuliarnaia struktura K+-kompleksa mezo-valinomitisna, cyclo(-(D-Val-L-Hyi-L-D-Hyi)3-).KAuCl4.

Crystal structure of the complex of meso-valinomycin with KAuCl4 (C60H102N6O18KAuCl4) was determined using direct X-ray diffraction analysis. The conformational state of the complex is similar to that determined earlier for free meso-valinomycin. Characteristic of it is the centrosymmetric bracelet shape stabilized by six intramolecular NH...OC hydrogen bonds of 4 --> 1 type. The K+ ion is located in an inner negatively charged octahedral cavity formed by six carbonyl oxygen atoms of ester groups. The observed differences in conformational angles of the complex and free are caused by readjustment of the geometry of the ion-binding cavity to the size of the ion bound during complexation.