Introduction. Intracranial aneurysms with a radiological sign of a donut are
a medical priority and have been described in a small number of cases. This
radiological sign occurs in aneurysms in which there is partial thrombosis
inside aneurismal sac and circular laminar flow between the aneurismal wall
and the thrombus in its center. Consequently, there is a central
contrast-filling defect of the aneurysm sac observed on different
angiographic imaging methods. Case outline. We present a 35-year-old female
patient was admitted for examination due to frequent headaches, visual
disturbances on the left and loss of sight on the right eye. Digital
subtraction angiography (DSA) showed an aneurysm on the right ICA measuring
25.6 ? 25 mm, while neck measured 11 mm and included part of the C6 and C7
segments. Treatment decision was made that positioning of flow diverting
stent across the aneurysm neck would be most beneficial in this case. After
procedure, patient was discharged in same general condition as she was before
admission to the hospital. Seven months after the intervention, she reported
for first digital DSA control. Normal position of the left A1was
demonstrated, suggesting shrinkage of aneurysm sac. An improvement of vision
on both eyes was stated. Conclusion. We present a patient with "donut"
aneurysm on the internal carotid artery, successfully treated with flow
diverting stent.
Long-standing Cannonball Metastases in Myxoid Chondrosarcoma: Multimodality Appearances of the Radiological Sign
