Turan-Ozdemir Senem, Oygucu Ibrahim Hakan, Kafa Ilker Mustafa
Department of Anatomy, Faculty of Medicine, Uludag University, 16059 Bursa, Turkey.
Anat Sci Int. 2004 Jun;79(2):95-7. doi: 10.1111/j.1447-073x.2004.00065.x.
During dissection of the submental region of a male cadaver, we encountered an abnormal digastric muscle on both sides. Two muscle bundles, both of which fused with mylohyoid muscle close to the midline, were observed on the right side. The anterior one originated from the digastric fossa and its length and width were 27 and 9 mm, respectively. The posterior accessory belly originated from the right intermediate tendon and it was 32 mm in length and 11 mm wide. On the left side, there was a single accessory bundle that originated from the left intermediate tendon and inserted into the mylohyoid raphe at the fusion point of the right accessory bundles. The length and width of this belly were 29 and 9 mm, respectively. The remaining suprahyoid muscles of both sides were normal. Anatomical variations of digastric muscle have to be considered in the imaging procedures of the soft tissue masses in the submental region.
在解剖一具男性尸体的颏下区域时，我们在两侧均遇到了异常的二腹肌。右侧观察到两个肌束，二者均在靠近中线处与下颌舌骨肌融合。前方的肌束起自二腹肌窝，其长度和宽度分别为27毫米和9毫米。后方的副腹起自右侧中间腱，长32毫米，宽11毫米。左侧有一个单独的副束，起自左侧中间腱，在右侧副束的融合点处插入下颌舌骨缝。该腹的长度和宽度分别为29毫米和9毫米。两侧其余的舌骨上肌群均正常。在颏下区域软组织肿块的成像检查中必须考虑二腹肌的解剖变异。
