Singapore Med J 2013; 54(6): e131-e132; http://dx.doi.org/10.11622/smedj.2013117
Duplicated anterior belly of the digastric muscle
Rani A, Chopra J, Rani A, Verma RK
Correspondence: Dr Archana Rani, archana71gupta@yahoo.co.in
ABSTRACT
During routine dissection of the submental region of a 65-year-old female cadaver, a bilateral supernumerary muscle, medial to the anterior bellies of the digastric muscle, was observed. The accessory muscle bundle was attached proximally to the digastric fossa of the mandible, with an intermediate attachment to the body of hyoid bone and a distal attachment to the medial margin of the lower end of the anterior belly of the digastric muscle and its intermediate tendon on the respective side. These bilaterally symmetrical accessory muscles of the submental region may be erroneously identified as an infarcted submental lymph node or a pseudomass on radiological examinations.
Keywords: accessory muscle, anterior belly, digastric muscle, submental region, variation
Singapore Med J 2013; 54(6): e131–e132; http://dx.doi.org/10.11622/smedj.2013117
REFERENCES
1. Guelfguat M, Nurbhai N, Solounias N. Median accessory digastric muscle: radiological and surgical correlation. Clin Anat 2001; 14:42-6.
http://dx.doi.org/10.1002/1098-2353(200101)14:1<42::AID-CA1007>3.0.CO;2-O |
|
2. Williams PL, Warwick R, Dyson M, Bannister LH. Myology. In: Gray H, Williams PL, Warwick R. Gray's Anatomy. 37th ed. London: Churchill Livingstone, 1989: 584.
PMCid:1026679 |
|
| 3. Loukas M, Louis RG, Kapos T, Kwiatkowska M. A case of a bilateral accessory digastric muscle. Folia Morphol (Warsz) 2005; 64:233-6. |
|
4. Celik HH, Aldur MM, Ozdemir B, Ak it MD. Abnormal digastric muscle with unilateral quadrification of the anterior belly. Clin Anat 2002; 15:32-4.
http://dx.doi.org/10.1002/ca.1088 |
|
5. Sarikcioglu L, Demir S, Oguz N, Sindel M. An anomalous digastric muscle with three accessory bellies and one fibrous band. Surg Radiol Anat 1998; 20:453-4.
http://dx.doi.org/10.1007/BF01653139 |
|
6. Sargon MF, Celik HH. An abnormal digastric muscle with three bellies. Surg Radiol Anat 1994; 16:215-6.
http://dx.doi.org/10.1007/BF01627599 |
|
| 7. Celik H, Yilmaz E, Atasever A, Durgun B, Taner D. Bilateral anatomical anomaly of anterior bellies of digastric muscles. Kaibogaku Zasshi 1992; 67:650-1. |
|
| 8. Uslu SS, Atilla S, Celik HH, Inal E. An important anatomic variation in head and neck region: anomaly of the anterior belly of the digastric muscle. Bull Assoc Anat (Nancy) 1995; 79:39-41. |
|
9. Larsson SG, Lufkin RB. Anomalies of digastric muscles: CT and MR demonstrations. J Comput Assist Tomogr 1987; 11:422-5.
http://dx.doi.org/10.1097/00004728-198705000-00010 |
|
10.Michna H. Anatomical anomaly of human digastric muscles. Acta Anat (Basel) 1989; 134:263-4.
http://dx.doi.org/10.1159/000146698 |
|
| 11. Jaijesh P. A bilateral variation of the anterior belly of the digastric muscle. Indian J Pract Doc 2006; 3:1-4. |
