INDIRECT CEREBRAL REVASCULARIZATION ON OPTHALMIC ARTERY BY USING A DRUG-ELUTING BALLON FOR SUSPECTED MOYAMOYA DISEASE

Moyamoya disease (MMD) is a rare idiopathic progressive vaso-occlusive disease causing multiple occlusion of cerebral vessels lead to ischemic stroke. Asian population is the most common race to be affected. We present a male patient 33-years old with suspected MMD with right hemiparesis and neurocognitive changes. On digital substraction angiography (DSA) there was appearance of ‘puff of smoke’ on his right hemisphere, stenosis middle cerebral arteries M1 bilaterally, stenosis of right opthalmic artery (OA), stenosis of left anterior cerebral artery (ACA) and aplasia of right ACA. Ballon angioplasty was performed on right OA that supply the contralateral symptomatic stenosis area (left A1) indirectly through anterior ethmoidal artery and anterior falcine artery (OA-ACA collateral). While no guidelines for the management of MMD, cerebral revascularization by using drug-eluting ballon (DEB) in right opthalmica artery is potentially effective treatment that could allow the brain to have good blood supply (gives good collateral to both ACA), reduces burden of the fragile moya-moya vessels to be ruptured followed by improvement of clinical results. Patient’s selection by understanding the stage, its progressivity and collateral formation are crucial before decision is made.

The Effects of Suprabullar Pneumatization on the Orientation of Its Surrounding Anatomical Structures Relevant to the Frontal Drainage Pathway

Objective: The aim of this study was to evaluate the effects of suprabullar pneumatization on the orientation of the frontal sinus outflow structures and its association with the volume of anterior ethmoid sinus. Methods: A retrospective chart review of computed tomography of paranasal sinuses (CTPNS) images was conducted. A total of 370 sides of the CTPNS of 185 patients were analyzed. Results: The course of anterior ethmoidal artery (AEA) along the skull base (p = 0.04) and position of AEA at the second lamella (p = 0.04) was significantly associated with the type of suprabullar pneumatization. The AEA is expected to be lower at the skull base and at a longer distance from the second lamella with the increase in grading of the suprabullar pneumatization. The distance of AEA to the second lamella (p < 0.001) and third lamella (p = 0.04) was significantly different depending on the type of suprabullar pneumatization, which indicates AEA is expected to be at a longer distance from the second lamella and third lamella in higher grade suprabullar pneumatization. The type of suprabullar pneumatization has a significant but weak association with the anterior ethmoid sinus volume (p = 0.04). Conclusions: There is a significant effect of the type of suprabullar pneumatization on the orientation of the surrounding anatomical structures at the frontal recess. The type of suprabullar pneumatization is influenced by the anterior ethmoid sinus volume, which suggests it has a possible role in the frontal drainage pathway.

Long Term Outcomes of Nasoseptal Perforation Repair With an Anterior Ethmoidal Artery Flap

Background Nasoseptal perforation repair is a challenging condition with no standard technique for repair recognized. Methods A case series of consecutive patients who underwent nasoseptal perforation repair with an anterior ethmoidal artery flap was conducted. Demographic data, preoperative features of the perforation and postoperative outcomes were analyzed. Closure rate, complications and persistence of nasal symptoms were documented. Results Thirty-two patients were included in the study. The average perforation diameter was 1.48 cm (range: 0.4–3 cm). Iatrogenic trauma was the most common cause (56% of patients). Nine cases ended up being idiopathic. The overall closure rate was 81%, but 87.5% when perforation had a 2-cm diameter or less. Of the six failures, 2 were due to flap necrosis and 4 to a residual anterior perforation. Despite the persistence, 2 patients solved their symptoms. One patient underwent revision surgery. Conclusion The anterior ethmoidal artery flap is a reliable and minimal invasive technique for closure of symptomatic perforations. For defects larger than 2 cm, a lower success rate and additional reconstructive measures should be considered. Objective questionnaires are needed in order to evaluate functional outcomes.

Intraoperative variations of the sphenopalatine artery between epistaxis and non-epistaxis cases: a comparative endoscopic analysis

Background Severe epistaxis is one of the most common emergencies in rhinology practices. The commonly used endoscopic cauterization of the sphenopalatine artery (SPA), alone or with the anterior ethmoidal artery (AEA), has a high success rate for controlling severe epistaxis. The current study was conducted to evaluate the endoscopic intra-operative variations of SPA between epistaxis and non-epistaxis cases. Forty consecutive patients who underwent exploration of SPA were included in the study. They were distributed into two groups depending upon the indication of SPA exploration; the epistaxis group (group A, n=25 patients, n=26 sides) and the non-epistaxis group (group B, n=15 patients, n=25 sides). Criteria of the main SPA in the two groups were compared regarding four parameters; arterial diameter, arterial adherence to the mucosa of the lower part of the basal lamella, sphenopalatine nerve bundle, and crista ethmoidalis erosion. Results A significant difference was found regarding the diameter of SPA between the two groups; a mean diameter of 4.2±0.64 mm was compared to 3.2±0.35 mm for group A and B, respectively (p=0.043). Moreover, a highly significant tendency was observed regarding the arterial adherence to the mucosa of the lower part of the basal lamella and sphenopalatine nerve bundle in the epistaxis group; (p≤0.01). Conclusion These data clearly signify the importance of intraoperative identification of SPA criteria during surgical management of severe epistaxis. These criteria may help in altering the surgical decision between solely SPA and concomitant SPA/AEA cauterization.

The utilization of paranasal sinus coronal tomography scans as a predictor for the anterior ethmoidal artery course.

The authors have requested that this preprint be withdrawn due to author disagreement.

Variability of the Anterior Ethmoid Artery in Endoscopic Sinus Surgery

Introduction: The anterior ethmoidal artery (AEA) demonstrates anatomic variability relative to its descent from the anterior skull base. Our study’s objective was to assess for correlation of AEA descent and laterality, in addition to correlation of AEA descent and the presence of supraorbital ethmoid cells (SOEC) and concha bullosae (CB). Method: A retrospective study was performed at a tertiary rhinology center from January 2019 to January 2020. Noncontrast maxillofacial computed tomography scans were examined independently by 2 fellowship trained rhinologists. The vertical distance from both left and right AEAs to the ipsilateral skull base were compared and correlated with the presence of ipsilateral SOEC and CB. Results: Computed tomography scans from 50 subjects were included. Mean age was 50.68 years (40% females). The distance of AEA to the skull base was greater on the left when compared to the right (62% vs 48%) ( P < .05). The left AEA had an average descent of 2.84 mm versus 1.78 mm on the right ( P < .05). An SOEC was present in 56% of cases. Thirty-eight percent of subjects had both SOEC and AEA descent on the right, while 52% of subjects had both on the left. This reached a statistical significance on both sides ( P < .05). Concha bullosa was present in 35% of cases, with both AEA descent and CB present in 16% on the right, and 32% on the left. Conclusion: The AEA displays variability in vertical descent from the skull base, with greater variability on the left. These findings implore vigilance with evaluation of preoperative imaging and during sinus surgery, especially in the presence of SOEC and CB.

Transpalpebral Incision for Resection of an Ethmoidal Dural Arteriovenous Fistula: 2-Dimensional Operative Video

Ethmoidal dural arteriovenous fistulas are vascular malformations with arterial supply from the anterior ethmoidal artery and ultimate drainage into the sagittal sinus.1-3 They are characterized by a high risk of hemorrhage. Microsurgical disconnection of the fistula represents a safe and robust treatment option. Endovascular treatment requires catheterization of the ophthalmic artery and carries a risk of visual deficits. The supraorbital craniotomy provides an excellent corridor to the anterior skull base and is well suited for the treatment of ethmoidal dural arteriovenous fistulas. The supraorbital craniotomy may be performed through a transpalpebral “eyelid” incision. The transpalpebral incision allows for a well-hidden scar and does not have any associated hair loss, as can be seen with the eyebrow incision. The patient consented to the procedure and being videotaped.