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International Journal of Morphology

On-line version ISSN 0717-9502


JACOB, Tony George; WADHWA, Surbhi; PAUL, Shipra  and  DAS, Srijit. Variations of Thoracic Splanchnic Nerves and its Clinical Implications . Int. J. Morphol. [online]. 2005, vol.23, n.3, pp.247-251. ISSN 0717-9502.

The present study reports an anomalous branching pattern of the thoracic sympathetic chain. At the level of T3 ganglion, an anomalous branch i.e accessory sympathetic chain (ASC) descended anteromedial to the main sympathetic chain (MSC). The MSC and the ASC communicated with each other at the level of T9, T10 and T11 ganglion, indicating the absence of classical pattern of greater, lesser and least splanchnic nerves on the right side. However, on the left side, the sympathetic chain displayed normal branching pattern. We opine that the ASC may be representing a higher origin of greater splanchnic nerve at the level of T3 ganglion and the branches from MSC at T9, T10 and T11 ganglion may be the lesser and least splanchnic nerves, which further joined the ASC (i.e presumably the greater splanchnic nerve) to form a common trunk. This common trunk pierced the right crus of diaphragm to reach the right suprarenal plexus after giving few branches to the celiac plexus. Awareness and knowledge of such anatomical variants of thoracic sympathetic chain may be helpful to surgeons in avoiding any incomplete denervation or preventing any inadvertent injury during thoracic sympathectomy

Keywords : Splanchnic nerves; Sympathetic chain; Trunk thoracic; Ganglion.

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