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Solitary myofibroma of the mandible in an adult with magnetic resonance imaging and positron emission tomography findings: a case report.

Tanaka Y, Yamada H, Saito T, Nakaoka K, Kumagai K, Fujihara H, Mishima K, Hamada Y - World J Surg Oncol (2014)

Bottom Line: The tumor was removed by marginal resection of the left mandible under general anesthesia.Histopathological findings revealed that the tumor stroma contained abundant thin-walled vessels.The postoperative course was uneventful, and we found no evidence of recurrence at the postoperative 34-month follow-up.

View Article: PubMed Central - HTML - PubMed

Affiliation: Department of Oral and Maxillofacial Surgery, Tsurumi University School of Dental Medicine, 2-1-3 Tsurumi, Tsurumi-ku, Yokohama, Japan. yamada-hi@tsurumi-u.ac.jp.

ABSTRACT
Myofibroma is a benign tumor composed of myoid spindle cells. The prevalence of myofibroma in the oral cavity is very low, with the mandible being the most common site. This report describes an adult case of myofibroma that arose on the mandible and includes magnetic resonance imaging (MRI) and positron emission tomography (PET) findings. On the MRI T1-weighted images, the tumor appeared with signal iso-intensity and was highly and heterogeneously enhanced with contrast material. On the T2-weighted images, it appeared with increased signal intensity. 18 F-fluorodeoxyglucose (FDG)-PET imaging showed abnormal strong accumulation of FDG in the left mandibular region. The tumor was removed by marginal resection of the left mandible under general anesthesia. Histopathological findings revealed that the tumor stroma contained abundant thin-walled vessels. The postoperative course was uneventful, and we found no evidence of recurrence at the postoperative 34-month follow-up.

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Photograph showing intraoperative view of the marginal resection of the left mandible.
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Figure 5: Photograph showing intraoperative view of the marginal resection of the left mandible.

Mentions: In November 2010, the biopsy was performed under local anesthesia. The pathological diagnosis was myofibroblastic tumor, probably benign. However, the mass enlarged rapidly to 35 × 25 mm within 3 weeks after biopsy. According to the clinical findings, we could not completely deny the malignancy of the tumor. On 2 December 2010, it was removed by marginal resection of the left mandible under general anesthesia (Figure 5).


Solitary myofibroma of the mandible in an adult with magnetic resonance imaging and positron emission tomography findings: a case report.

Tanaka Y, Yamada H, Saito T, Nakaoka K, Kumagai K, Fujihara H, Mishima K, Hamada Y - World J Surg Oncol (2014)

Photograph showing intraoperative view of the marginal resection of the left mandible.
© Copyright Policy - open-access
Related In: Results  -  Collection

License
Show All Figures
getmorefigures.php?uid=PMC4230239&req=5

Figure 5: Photograph showing intraoperative view of the marginal resection of the left mandible.
Mentions: In November 2010, the biopsy was performed under local anesthesia. The pathological diagnosis was myofibroblastic tumor, probably benign. However, the mass enlarged rapidly to 35 × 25 mm within 3 weeks after biopsy. According to the clinical findings, we could not completely deny the malignancy of the tumor. On 2 December 2010, it was removed by marginal resection of the left mandible under general anesthesia (Figure 5).

Bottom Line: The tumor was removed by marginal resection of the left mandible under general anesthesia.Histopathological findings revealed that the tumor stroma contained abundant thin-walled vessels.The postoperative course was uneventful, and we found no evidence of recurrence at the postoperative 34-month follow-up.

View Article: PubMed Central - HTML - PubMed

Affiliation: Department of Oral and Maxillofacial Surgery, Tsurumi University School of Dental Medicine, 2-1-3 Tsurumi, Tsurumi-ku, Yokohama, Japan. yamada-hi@tsurumi-u.ac.jp.

ABSTRACT
Myofibroma is a benign tumor composed of myoid spindle cells. The prevalence of myofibroma in the oral cavity is very low, with the mandible being the most common site. This report describes an adult case of myofibroma that arose on the mandible and includes magnetic resonance imaging (MRI) and positron emission tomography (PET) findings. On the MRI T1-weighted images, the tumor appeared with signal iso-intensity and was highly and heterogeneously enhanced with contrast material. On the T2-weighted images, it appeared with increased signal intensity. 18 F-fluorodeoxyglucose (FDG)-PET imaging showed abnormal strong accumulation of FDG in the left mandibular region. The tumor was removed by marginal resection of the left mandible under general anesthesia. Histopathological findings revealed that the tumor stroma contained abundant thin-walled vessels. The postoperative course was uneventful, and we found no evidence of recurrence at the postoperative 34-month follow-up.

Show MeSH
Related in: MedlinePlus