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We found 3 right and 2 left renal arteries with asymmetrical origins in a 61-year-old Korean male cadaver, whose cause of death was ‘laryngeal carcinoma’. According to a previous classification, the first and second right renal arteries correspond to the early division and other renal arteries — to the extra renal arteries, except the first left renal artery as a typical renal artery. The third right renal artery ran anterior to the inferior vena cava to the inferior pole of the kidney. The first and second left renal arteries were associated with the inferior suprarenal artery and the testicular artery, respectively. The bilateral asymmetry in the number of renal arteries can be explained by the embryological development, degeneration and persistence of the renal artery in the process of ascending of kidneys (Folia Morphol 2014; 73, 4: 510–513).
Single anatomical variation in the upper limb is common, but the coexistence of neuromuscular anomalies is still rare. We found a combined neuromuscular variation in the upper limb in a 61-year-old Korean male cadaver, whose cause of death was laryngeal carcinoma, during a routine dissection course for medical students. In his left arm, a supernumerary head of the biceps brachii muscle attached to the anteromedial surface of mid-humerus and united distally with the long and short heads of the biceps brachii muscle (BBM). The musculocutaneous nerve, which did not pierce the coracobrachialis muscle but gave 2 muscular branches, had a communicating branch to the median nerve. Since the presence of the supernumerary head of the BBM might affect the course and branching of the musculocutaneous nerve, knowing different patterns of the musculocutaneous variation associated with the BBM variations is essential for anatomists and clinicians. (Folia Morphol 2014; 73, 3: 366–369)
Variation in urogenital vessels is of interest to clinicians as well as anatomists since it has complex steps of urogenital development. We found 2 right and 3 left renal arteries, double right renal veins, the right testicular artery arisen from the right main renal artery, and the right testicular vein as a tributary of an additional right renal vein in a 57-year-old Korean male cadaver, whose cause of death was ‘unknown’. The multiple vascular variations near the renal hilum are detectable in seemingly normal individuals and a deeper understanding of the complicated urogenital vasculature might be very important with its embryogenesis. (Folia Morphol 2015; 74, 3: 399–401)
Although the cephalic vein follows a fairly consistent course, numerous variants have been reported. We found a rare anatomical presentation of the cephalic vein in a 43-year-old Korean male cadaver. The cephalic vein had anastomosed with the basilic vein and brachial vein at the level of the elbow, perforated the pectoralis major muscle between the clavicular and sternal heads, and then entered into one of the double axillary veins. Knowledge of the variations on the cephalic vein is important for clinicians as well as anatomists since the approach through the axillary base is favoured in many invasive procedures. (Folia Morphol 2016; 75, 2: 268–270)
During the routine dissection course, we found a rare variation of the incomplete coeliac trunk in an 87-year-old Korean male cadaver. The left gastric artery, the splenic artery and the hepatomesenteric trunk arose independently from the abdominal aorta. The detailed branching pattern of this case could not be classified by classic classification systems, but belongs to type III’ of Morita’s classification. The accurate embryological knowledge on the arterial variations is important both to anatomists and to clinicians. (Folia Morphol 2016; 75, 1: 122–124)
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