Distal aneurysm of median artery of the corpus callosum: case report

Background . There are many variations of the developmental pathology anterior communicating artery with such forms as aplasia, hypoplasia, duplication, triplication and etc. The presence median corpus callosum is a rare part circle Willis and, according to literature frequency 4,5-14,2 %. About 81 % cases, occurrence combined trifurcation. incidence distal cerebral aneurysms has been estimated be from 1.5 9.0 all intracranial aneurysms, while rarely mentioned in literature, author article did not find cases descriptions PubMed. It should borne mind that when conducting radiation diagnostics, up one third remain undetected. Aim To present clinical case successful surgical treatment aneurysm patient K., 39 years old, performed using neuronavigation. Materials methods A report management 39-year-old at Sity Clinical Hospital No. 1 named after N.I. Pirogov Moscow Healthcare Department. had saccular A2-3 segments callosum. Results microsurgical clipping right interhemispheric approach through bifrontal craniotomy neuronavigational assistance was performed. selective angiography arteries (10 mo clipping) no detected signs recanalization aneurysm. Conclusion deeper placement (as compared arteries) missing anatomical landmarks complicates instrumentation neuronavigation made it possible perform minimal safe encephalotomy medial aspects frontal lobes (at site genu callosum) reduce operating time.