A rare case of Ewing sarcoma metastasis to the oral cavity

Clinical and imaging features of eight cases of Ewing sarcoma of the jaw

OBJECTIVES

This study investigate the clinical and imaging features of Ewing sarcoma (ES) of the jaw.

METHODS

Eight cases of pathologically diagnosed ES of the jaw from January 2010 to June 2022 were included in the study. Clinical and radiological features were retrospectively analyzed.

RESULTS

Among the eight cases, the mean age at onset was 29.4 years, and the male to female ratio was 7∶1. The predilecting site was the posterior part of mandible, accounting for 75% of the cases. The lesions often exhibited early numbness of the lower lip and lymphadenopathy. The main radiographic manifestation of mandibular lesions was ill-defined radiolucency, mixed with fibrous or brush-like tumor matrix, and soft tissue mass. The maxillary ES lesions mainly presented as lytic bone destruction accompanied by adjacent soft tissue mass. Periosteal ossification was rarely seen.

CONCLUSIONS

The clinical and imaging characteristics of ES in the jaw are helpful for its diagnosis.

Anomalous chin lesion: The many presentations of extraosseous Ewing's sarcoma

Ewing's sarcoma (ES) is an aggressive, poorly differentiated round cell tumor in bone or soft tissues. This rare neoplasm is found primarily in the long bones of limbs and flat bone of pelvis with a predilection in the second decade in life. Primary ES of the maxillofacial region is exceptional and constitute 1% ± 4% of all cases. This case report is aimed at highlighting a very rare clinical presentation of extraosseous ES of the chin region-a first of its kind.