PMC4361959_01
Right side axillary region showing Mn = Median nerve, MCNA1 = Cranial medial cutaneous nerve of arm, MCNA2 = Caudal medial cutaneous nerve of arm, ICBN = Main trunk of the intercostobrachial nerve, ICBN 1 = Upper communicating branch of the intercostobrachial nerve, ICBN2 = Lower communicating branch of the intercostobrachial nerve, AXA = Axillary artery, TAA = Thoracoacromial artery, ATA = Alar thoaracic artery, Pm = Pectoralis major
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F1
The cranial medial cutaneous nerve (MCNA 1) was seen to arise just proximal to medial root of the median nerve [Figure 1]. ICBN was seen emerging as usual from the second intercostal space. In addition to the ICBN two nerves ICBN1 and ICBN2 were found emerging as usual from the second intercostal space which traversed toward the medial aspect of arm [Figure 1]. The ATA branched off the axillary artery, 0.2 cm distal to the origin of the thoracoacromial artery [Figure 1].
Right side axillary and lateral thoracic region showing MCNA1 = Cranial medial cutaneous nerve of arm, MCNA2 = Caudal medial cutaneous nerve of arm, ICBN = Main trunk of the intercostobrachial nerve, ICBN 1 = Upper communicating branch of the intercostobrachial nerve, ICBN2 = Lower communicating branch of the intercostobrachial nerve, ATA = Alar thoracic artery, Br ATA = Branch of the alar thoracic artery
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F2
This vessel passed along the lateral thoracic wall between the ICBN and ICBN2 and terminated thereafter [Figure 2].