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Cross-over type of supernumerary digastric muscle: a case report
open access
Abstract
A cross-over type asymmetric anomaly of the anterior belly of the right digastric muscle was observed during a cadaveric dissection of the submental region. Three irregularly-shaped supernumerary muscle bundles were found between the anterior bellies of the digastric muscles. Although the anomalies of the digastric muscles are often observed, this complicated pattern has not been previously reported. Our findings and previous reports illustrate the morphogenetic complexity of the anterior belly of the digastric muscle, and their potential importance in confounding clinical evaluation or complicating surgical procedures in the submental region.
Abstract
A cross-over type asymmetric anomaly of the anterior belly of the right digastric muscle was observed during a cadaveric dissection of the submental region. Three irregularly-shaped supernumerary muscle bundles were found between the anterior bellies of the digastric muscles. Although the anomalies of the digastric muscles are often observed, this complicated pattern has not been previously reported. Our findings and previous reports illustrate the morphogenetic complexity of the anterior belly of the digastric muscle, and their potential importance in confounding clinical evaluation or complicating surgical procedures in the submental region.
Keywords
anatomic variant, anterior belly, asymmetry, submental region, human gross anatomy
About this articleTitle
Cross-over type of supernumerary digastric muscle: a case report
Journal
Issue
Published online
2018-12-05
DOI
10.5603/FM.a2018.0112
Pubmed
Keywords
anatomic variant
anterior belly
asymmetry
submental region
human gross anatomy
Authors
Žiga Šink
Nejc Umek
Erika Cvetko