A 27-year-old female patient also underwent thrombectomy with temporary trapping (5 minutes) and clipping
of the eccentric giant aneurysm to reconstruct the lumen
of the M1 segment of the right MCA. No intraoperative
complications were observed. In the postoperative period,
severe left-sided hemiparesis developed, and CT revealed
a small ischemic area in the right subcortical nuclei that
was associated with a lenticulostriate artery infarct. This
patient received conservative treatment only.
One 57-year-old female patient underwent surgery for a
fusiform, partially thrombosed aneurysm of the left MCA
bifurcation. During this surgery, significant atherosclerotic
plaques were found in the aneurysm walls and the distal
secondary MCA branches, in addition to a thrombus in
the aneurysm dome. We decided not to attempt aneurysm
exclusion; instead, the walls were wrapped with surgical
gauze and Omnex glue.
In 5 cases partially thrombosed fusiform aneurysms
of the distal MCA branches were diagnosed. Two patients
underwent aneurysm clipping with luminal reconstruction
of the M2 segment after thrombectomy with temporary
trapping. One of these patients (Table 2, Case 9) developed
distal artery thrombosis after clipping. After direct
removal of the soft thrombus from the proximal M3 segment
and intraarterial injection of 25,000 IU urokinase,
the artery lumen was reconstructed. Moderate speech
disorders developed but significantly diminished within 7
days postoperatively.
In 3 patients, nearly completely thrombosed fusiform
aneurysms were diagnosed. We decided not to attempt
clipping with reconstruction of the parent artery. In 1 patient
with an aneurysm in the M4 segment of the MCA, we
performed aneurysm trapping. In the second case, the aneurysm
was located in the M2 segment, and trapping was
performed after creation of a bypass between the temporal
MCA branch and the M3 segment (Fig. 5). In the other
patient (Table 2, Case 10), a large aneurysm of the M3 segment
was excised following end-to-end (in situ) bypass.