The cervicothoracic or stellate ganglion belongs to the cervical part of sympathetic system. In animals it is formed by the combination of the caudal cervical ganglion with the first and often second thoracic ganglion. The study was conducted on 20 newborn Persian cats [7 males and 13 females] coming from the 58th day of gestation. The research has shown that the cervicothoracic ganglion is formed from the fusion of three or four ganglia: the caudal cervical ganglion [GCca], first thoracic ganglion [GTh1], second thoracic ganglion [GTh2], third thoracic ganglion [GTh3]. It is situated in C7-8 -Th1-3 segment. It is characterized by variable location relative to the cervical and thoracic segment of the vertebral column [skeletotopy] and various shape [oval, oblong, triangular, oblong with a distinct narrowing]. The morphometry of the examined cervicothoracic ganglion proved that the longest cervicothoracic ganglion is found on the left side in females [= 3.016 mm], the shortest on the right side also in females [= 2.790 mm]. The widest ganglion is found in males on the right side [= 1.758 mm], the narrowest in females on the left side [= 1.418 mm].

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