2020
DOI: 10.1590/0102-672020190001e1508
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Abstract: Introduction: Superior mesenteric artery (SMA) usually arises from the abdominal aorta, just below the celiac trunk and it supplies the midgut-derived embryonic structures. Anatomical variations in this vessel contribute to problems in the formation and/or absorption of this part of the intestine and its absence has been recognized as the cause of congenital duodenojejunal atresia. Objective: To analyze SMA anatomical variations in humans and the possible associated clinical and surgical implications. Meth… Show more

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Cited by 14 publications
(10 citation statements)
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“…Because the branching pattern of the SMA varies among individuals (Bolintineanu et al, 2019; da Silva et al, 2020; Kurdal et al, 2010; Liang et al, 2017; Wayne et al, 2011), it would be desirable if the anatomy of this area in patients being prepared for surgery were recognized.…”
Section: Discussionmentioning
confidence: 99%
See 1 more Smart Citation
“…Because the branching pattern of the SMA varies among individuals (Bolintineanu et al, 2019; da Silva et al, 2020; Kurdal et al, 2010; Liang et al, 2017; Wayne et al, 2011), it would be desirable if the anatomy of this area in patients being prepared for surgery were recognized.…”
Section: Discussionmentioning
confidence: 99%
“…However, no classification of the SMA based on its morphology has been generally accepted to date. SMA branching patterns are still being discovered and their implications for surgical procedures in that anatomical area are significant (da Silva et al, 2020). Previous anatomical studies on cadavers have described SMA variations in the form of case reports in which abnormal arteries were observed.…”
Section: Discussionmentioning
confidence: 99%
“…SMA syndrome is a symptom complex disease caused by extrinsic compression of the third part of the duodenum due to narrowing of the aortomesenteric space (AMS) between the aorta and the SMA [1]. Although the origin and route of the SMA are variable, it arises classically from the aorta at the level of intervertebral discs between vertebral level L1 and L2 [7]. The third part of the duodenum extends from the right side of L3 or L4 to the left side of the aorta and runs horizontally at the level of L3 [8,9].…”
Section: Discussionmentioning
confidence: 99%
“…Levin argued that the length and location of the narrowing of the duodenum do not match with the location of the AMA [16,17]. Although the anatomic variation and shape of the SMA are quite diverse, Levin predicated that the closed segment of the duodenal images in 29 cases seem to be unlikely related to the SMA through the radiometric analysis from the 35 published articles [7,13,16]. Based on these analysis, Levin introduced the theory of Ochsner functional sphincter dyskinesia as a cause of manifestations of SMAS.…”
Section: Discussionmentioning
confidence: 99%
“…2 Most of the published literature on congenital absence of the SMA is associated with fetal intestinal atresia. 3 To date, there has been only one published case report of a congenitally absent SMA diagnosed in an adult. 4 Similar to the present case, the authors noted an absent SMA with an enlarged collateral branch of the IMA.…”
Section: J O U R N a L P R E -P R O O Fmentioning
confidence: 99%