Accessory belly of digastric muscle presenting as a submandibular space mass

Bonala, Nagateja; Kishan, Tatikonda Venkat; Pavani, B. Sri; Murthy, Preethi

doi:10.1016/j.mjafi.2015.06.022

Cited by 9 publications

(8 citation statements)

References 6 publications

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“…For example, Bonala et al reported a case in which an accessory muscle belly of the ABDM was clinically misdiagnosed as a pathological mass, but later correctly identified as variant musculature using ultrasound, CT, and MRI [3]. The differential diagnosis for submental and submandibular space masses includes abscess, plunging ranula, branchial cleft cyst, thyroglossal duct cyst, hematoma, lymphadenopathy, and benign or malignant tumors [3,8,17,18,31], but less commonly includes variant digastric musculature. Therefore, a detailed understanding of variants such as the arrowhead variation broadens the differential diagnosis in the clinical and radiological interpretation of submandibular masses.…”

Section: Discussionmentioning

confidence: 99%

The submental arrowhead variation of the mylohyoid and anterior belly of the digastric muscles

et al. 2018

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Purpose-Submental anatomical variation is of clinical importance with regard to head and neck surgeries. One such anatomical variation is that of additional musculature joining the intermediate tendon of the digastric muscle to the midline of the mylohyoid musculature-a variation which this report refers to, accordingly, as an arrowhead variation. Though the arrowhead variation has been described in several case reports, it has not been subject to cross-sectional study. The purpose of this study is to determine the prevalence of the arrowhead variation. Methods-Prevalence of the arrowhead variation was assessed in 19 cadavers via gross dissection. Results-Two of the 19 cadavers (10.5%) were found to have arrowhead variations. The arrowhead variation was found in one male (1:11; 9.1%) and one female (1:8; 12.5%), respectively. Conclusions-This report demonstrates that the submental arrowhead variation of the anterior digastric and mylohyoid musculature has been reported in isolated case reports since the nineteenth century. This report is the first cross-sectional study of the arrowhead variant, identifying it in approximately one in ten individuals and in both sexes. Therefore, the presence of an arrowhead variation should be regularly considered with regard to diagnosis of submental masses. Likewise, the arrowhead variation should be considered in the preoperative planning of the myriad operations performed in the submental region.

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Section: Discussionmentioning

confidence: 99%

The submental arrowhead variation of the mylohyoid and anterior belly of the digastric muscles

et al. 2018

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“…The submandibular space is a complex triangular compartment that is bounded superiorly by the mylohyoid muscle, anteriorly by the medial surface of the mandible and the skin, and inferiorly by the superficial fascia and platysma muscle. It encloses vital anatomic structures such as the submandibular salivary gland, facial artery/vein, lingual nerve, and hypoglossal nerve 31 . The submandibular space also freely communicates superiorly with the sublingual space and inferiorly with the lateral pharyngeal space 26 .…”

Section: Discussionmentioning

confidence: 99%

“…Access to the submandibular space is difficult because of the anatomical structures enclosed by this space 31 . Many surgical approaches, including trans-oral approaches via general 4 7 22 26 or local anesthesia 3 25 27 and extra-oral approaches via local 25 or general anesthesia 1 have been reported.…”

Section: Discussionmentioning

confidence: 99%

Persistent lingual paresthesia caused by a displaced tooth fragment: a case report and literature review

Torul

Kazan

Bereket

et al. 2017

J Korean Assoc Oral Maxillofac Surg

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Accidental displacement of the third molar tooth or its fragment into the anatomical spaces is a rare but potentially serious complication. The most common sites of mandibular third molar displacement are the sublingual, submandibular, and pterygomandibular spaces. Removal of a displaced tooth or its fragments from these spaces may be difficult due to poor access and the vital structures involved in these spaces; therefore, removal may result in permanent damage. This article is intended to provide a concise update of the reported cases of submandibular displacement and to present a case of intraoral management of mandibular third molar root fragments that were displaced into the submandibular space.

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“…[ 13 ] Despite being asymptomatic, muscular variation can lead to the radiographic misinterpretation and also cause difficulty during surgical approach involving the submental region. [ 14 ]…”

Section: Introductionmentioning

confidence: 99%

Anatomical Variations of the Anterior Belly of the Digastric Muscle in Thai Cadavers

Arayapisit

Vorakulpipat

Srimaneekarn

et al. 2022

Journal of International Society of Preventive and Community Dentistry

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A BSTRACT Aim: Because the digastric muscle is considered as an anatomical landmark, its variations may emphasize clinicians to be cautious during surgery. However, previous studies from different ethnicities reported a wide range of occurrence and several types of this muscle variation, pointing the necessity of the data from local population to better treatment decisions. Thus, this study aimed to explore the variations of the anterior belly of the digastric muscle in Thai cadavers. Materials and Methods: This cross-sectional study investigated the submental region of 91 cadavers by convenient sampling method. The characteristics of the variation in the anterior belly were recorded in accordance with sex and side of the cadavers. Multiple logistic regression was calculated for determining the association of occurrence of muscle variation with sexes and sides (α = 0.05). Results: Among 91 cadavers, the accessory bundles were observed in 16 cadavers (10 males and 6 females). The presence of the additional belly was sex and side independent. Three variation types were observed; the arrowhead type and the double-headed type have been previously reported, whereas the asymmetrical fan-shaped type is the new variant that has never been described before. Conclusions: The variation of the anterior belly of the digastric muscle including the new variant can be seen in Thais with low occurrence. To our knowledge, the present study is the first report of the aberrations of the digastric muscle in the Southeast Asian population. Therefore, our study provides the basis for anatomical study of muscular variants and helps surgeons plan the operation to prevent iatrogenic injuries.

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Accessory belly of digastric muscle presenting as a submandibular space mass

Cited by 9 publications

References 6 publications

The submental arrowhead variation of the mylohyoid and anterior belly of the digastric muscles

The submental arrowhead variation of the mylohyoid and anterior belly of the digastric muscles

Persistent lingual paresthesia caused by a displaced tooth fragment: a case report and literature review

Anatomical Variations of the Anterior Belly of the Digastric Muscle in Thai Cadavers

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