Fig. 2.

Illustration of variant venous pattern in the present case. The retromandibular vein is absent, resulting in the division of maxillary vein, abnormal formation of the external jugular vein, and persistence of an anomalous vein.

Illustration of variant venous pattern in the present case. The retromandibular vein is absent, resulting in the division of maxillary vein, abnormal formation of the external jugular vein, and persistence of an anomalous vein.