Mandibular swelling in a 5-year-old child--mandibular myofibroma

Solitary Myofibroma of the oral and maxillofacial regions in pediatric patients: A clinicopathological analysis of ten patients and review of 75 cases

BACKGROUND

The imaging manifestations of oral and maxillofacial myofibroma/myofibromatosis can vary among patients. Although many clinical cases have been reported, a consensus on the clinicopathological features of and treatment principles for this disease is lacking.

PURPOSE

This study aimed to summarize the clinicopathological features of solitary myofibroma of the oral and maxillofacial regions in pediatric patients.

METHODS

The clinical data, histological features, and immunohistochemical characteristics of ten pediatric patients who underwent surgical removal and subsequent pathological diagnosis of myofibroma were collected and retrospectively and cross-sectionally analyzed.

RESULTS

Seven patients were male, and 3 were female, with ages ranging from 3 months to 6 years (mean: 2.6 years). The patients presented with solitary lesions involving the mandibular gingiva and adjacent mandible (4 patients), mandible (2 patients), oral floor and submandibular area and adjacent mandible (1 patient), gingiva (1 patient), maxilla (1 patient), and oropharynx (1 patient). Light microscopy revealed spindle-shaped tumor cells organized in bundles or vortex patterns, forming a hemangiopericytoma-like perivascular pattern, whereas immunohistochemical staining revealed diffuse smooth muscle actin (SMA) positivity. All patients underwent surgical resection, and none experienced recurrence over the 12- to 82-month follow-up.

CONCLUSIONS

Solitary myofibroma in the oral and maxillofacial regions is predominantly observed in infants and young children, with a higher incidence among males. The prognosis is favorable following localized lesion resection or curettage of jawbone lesions. Accurate recognition of the clinical, radiological, and pathological features of the disease will reduce the misdiagnosis rate.

Solitary Intraosseous Myofibroma of the Mandible in a Nine-Year-Old Child: A Case Report and Literature Review

Myofibroma (MF) is a benign neoplasm derived from myofibroblasts. While they are infrequent, these tumors are predominantly found in the pediatric group and seldom manifest as intraosseous mandibular tumors. Herein, we present a 9-year-old female with a radiolucent lesion in the left mandible associated with malposed left lower canine and 1st premolar teeth. Clinical examination revealed a slightly tender 5×4 cm firm mass resulting in an expansion of the buccal and lingual aspects of the mandible in the canine and first premolar region. An incisional biopsy revealed a benign tumor consisting of spindle cells organized in fascicles, alongside dispersed thin-walled blood vessels. Tumor cells tested positive for α-smooth muscle actin (SMA) and vimentin. Given these findings, a diagnosis of MF was established. To the best of our knowledge, only 45 cases of solitary MF of the mandible have been reported in the pediatric age group in the literature. We describe one additional case and provide a review of the literature.

Solitary intraosseous myofibroma of the ilium in an adult patient: A case report and literature review

BACKGROUND

Myofibroma is a rare benign tumor typically occurring in the skin and subcutaneous tissues of the head and neck in infants and young children. The incidence of solitary intraosseous and adult myofibroma is extremely low. Although there have been a few reported cases of solitary intraosseous myofibroma in adult patients, most of these cases involved the craniofacial bones.

METHODS

We present the case of a 64-years-old woman presenting with minimal pain of the right buttock and groin.

RESULT

Radiographs and computed tomography showed a huge tumor spreading around the ilium, and non-uniform calcifications were noted inside the tumor. Iliac tumor biopsy was conducted, and intraosseous myofibroma was suspected. We performed surgical resection of the mass, and a final diagnosis of myofibroma with metaplastic bone production was made.

CONCLUSION

We have presented an extremely rare case of solitary intraosseous myofibroma in an adult patient.

Solitary Intra-Osseous Myofibroma of the Jaw: A Case Report and Review of Literature

Myofibroma is a rare benign spindle cell neoplasm in children that usually affects both soft tissue and bone in the head and neck region. Approximately one third of these cases are seen within jaw bones as solitary lesions. Solitary intra-osseous myofibroma of the jaw bone shares its clinical, radiographic and histological features with other spindle cell tumors. The rarity of this lesion can make diagnosis difficult for clinicians and pathologists. We report a case of a solitary intra-osseous myofibroma in the mandible of a nine-year-old child.

Solitary Myofibroma of the Mandible in a Six-Year Old-Child: Diagnosis of a Rare Lesion

Myofibroma is a benign uncommon fibroblastic tumour originating from the soft tissue, bone and may affect both children and adults. Radiographically myofibroma presents as unilocular radiolucency. Histologically, typical biphasic cellular arrangement is noted. Immunohistochemical markers are useful for definitive diagnosis of this uncommon neoplasm. Here, a case of six-year-old male child with a localized swelling in the left body of mandible is presented. The clinical, radiological, histological and immunohistochemical findings were corroborative of Infantile Myofibroma.