Upper gastrointestinal bleeding from primary aortoesophageal fistula in a patient with aneurism of the thoracoabdominal aorta: Case report and literature review.

Key Clinical Message: Upper gastrointestinal bleeding due to primary aortoesophageal fistula is a rare clinical condition burdened with high mortality rate. However, the outcomes are closely related to the level of clinical awareness, the complementary and multidisciplinary approach during the diagnostic workup, and the selected treatment option.

Abstract: We present an atypical case of an aneurysm of the thoracoabdominal aorta complicated with primary aortoesophageal fistula (AEF).

Survival in Patients with Liver Cirrhosis: A Prospective Study.

: The differences in the survival time of cirrhotic patients reported by different studies are probably caused by the influence of many contributing factors. The aim of the study was to evaluate the survival over a one-year period, to register the occurrence of acute decompensation (AD) and to determine the most frequent causes of death. : Out of 71 patients enrolled in the study, 63 completed the prospective one-year follow-up.

Rare Blood Groups in ABO, Rh, Kell Systems - Biological and Clinical Significance.

The frequency of ABO, Rh and Kell blood group antigens differs among populations of different ethnic ancestry. There are low-frequency antigens (<1%) and high-frequency antigens (>90%). A rare blood group is defined as the absence of a high-frequency antigen in the general population, as well as absence of multiple frequent antigens within a single or multiple blood group systems.