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Nutcracker syndrome includes all the symptoms associated with the narrowing of the left renal vein (LRV). That narrowing occurs between the aorta and the Superior Mesenteric Artery (anterior) or vertebra (posterior). The symptoms are various and not specific but the patient sometimes presents hematuria with or without left flank pain. We report a case on a 42 years old woman, who was suffering from left flank pain for a long time aggravated during and after each pregnancy. The diagnosis of nutcracker syndrome was initially omitted. Abdominal pelvic Angio CT and venography were performed. We placed a percutaneous stent in the narrowed portion of the renal vein. The result was successful.

Goal: The aim of this work is to study the relationship between the pneumatization of the adjacent structures of sphenoid sinuses and the protrusion of the neurovascular structures in the sinuses. Methods: A review of 225 CT scans skull was done for subjects aged at least 16 years old from November 1st to December 31st 2017. The pneumatization of adjacent structures of sphenoid sinuses and its relation with the protrusion of neurovascular structures surround the sinuses have been investigated. We used Fischer Exact test for comparison. The p value < 0.05 was expressed as significant. Results: Statistically significant associations were found between anterior clinoid process bilateral pneumatization and bilateral protrusion of carotid canal (p < 0.05) and of optic canal (p < 0.001). There were also, statistically significant correlations between bilateral pterygoid process pneumatization and bilateral protrusion of carotid canal and of optic canal (p < 0.001); and between pterygoid process bilateral pneumatization and bilateral protrusion of maxillary and vidian nerves (p < 0.001). An association was also found between bilateral pneumatization of great wings and bilateral protrusion of maxillary nerves (p < 0.001) and of vidian nerves (p < 0.05). Conclusion: Compared to the literature, the prevalence of pneumatization of the adjacent structures of sphenoid sinuses was lower on Beninese than Caucasian and Asian. But there were the same correlations with the protrusion of neurovascular structures. In case of endonasal surgery of the sphenoid sinuses, surgeon should be aware of How to cite this paper:

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