Surg Radiol Anat (2017) 39:937 DOI 10.1007/s00276-016-1805-8 LETTER TO THE EDITOR Infraoptic anterior cerebral artery (ACA) versus carotid-ACA anastomosis Akira Uchino Received: 30 September 2016 / Accepted: 19 December 2016 / Published online: 31 January 2017 © Springer-Verlag France 2016 Dear Sir, In addition, Kim and Sim mentioned that they found three left-side cases of this variation on computed tomog- I read with great interest the recent article titled “Infraop- raphy angiography. However, Fig. 3 (Case 3) showed right- tic anterior cerebral artery: case series report and litera- side variation. ture review” by Kim and Sim  published in Surgical Compliance with ethical standards and Radiologic Anatomy (2016; 38:887–891). Rarely, the anterior cerebral artery (ACA) arises from the internal Conflict of interest The author declares that I have no conflict of carotid artery at the level of the ophthalmic artery and takes interest. an infraoptic and prechiasmatic path to anastomose with the ACA. This variation is called as “infraoptic ACA” or “carotid-ACA anastomosis”. Kim and Sim reviewed only References cases reported as “infraoptic ACA”. Therefore, the review by Kim and Sim is incomplete. Because there is an ipsilat- 1. Kim MS, Sim SY (2016) Infraoptic anterior cerebral artery: case eral A1 segment in some patients, it seems reasonable that series report and literature review. Surg Radiol Anat 38:887–891 2. Uchino A, Saito N, Okada Y, Inoue K (2012) Carotid-anterior this variation is not a part of the ACA. Therefore, I prefer cerebral artery anastomosis on MR angiography: a university the term “carotid-ACA anastomosis” rather than “infraoptic hospital-based study. Neuroradiology 54:13–18 ACA”. There is right-side predominance, but the reason is 3. Uchino A, Sawada A, Takase Y, Imaizumi T, Egashira R, Mat- unknown [2, 3]. Its magnetic resonance angiographic prev- suo M, Kudo S (2004) Carotid-anterior cerebral artery anasto- mosis: MR angiographic features and literature review. Clin alence was reported to be 0.086% . Imaging 28:377–380 * Akira Uchino firstname.lastname@example.org Department of Diagnostic Radiology, Saitama Medical University International Medical Center, 1397-1 Yamane, Hidaka, Saitama 350-1298, Japan Vol.:(0123456789) 1 3
Surgical and Radiologic Anatomy – Springer Journals
Published: Jan 31, 2017
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