Osteosarcoma of the maxilla presenting as a chronic pyogenic abscess: A case report.
2021
INTRODUCTION Osteosarcoma of the maxilla is recorded as the least common of all bone malignancies. It exhibits a clinical behavior and natural history distinct from their counterparts of the trunk and extremities. Transformation from a chronic pyogenic abscess of the maxilla is even more unusual. CASE SUMMARY A 70 year old lady presented to our hospital with a hard, fixed and tender bony swelling in her left cheek. She had initially presented to a different hospital with a similar presentation which was excised after imaging and post excision was found to be a chronic pyogenic abscess. The swelling reappeared within one year and on re-excision was found to be a low grade paraosteal osteosarcoma of the hard palate. CECT and PET-CT work-up at our hospital showed a left maxillary sinus growth with prominent neck lymph nodes along with mediastinal lymphadenopathy and pulmonary metastasis. Final histopathology revealed ulcerated stratified squamous epithelium mucosa overlying a lesion suggestive of osteosarcoma. DISCUSSION Complete surgical excision with negative margins continues to be the mainstay of treatment, but osteosarcomas of maxillofacial region pose difficulties in obtaining tumour free margins because of their complex anatomy around the cranium. Surgery may be complemented by radiotherapy with or without chemotherapy. Small size of the tumour and low-grade histology have been assumed to reflect a better prognosis. CONCLUSION Osteosarcoma of maxillofacial region has variable appearance clinically as well as radiologically posing a diagnostic challenge for clinicians. Any chronic abscess or recurrent cheek swelling thus necessitates further suspicion and requires a full work-up to rule out this high risk malignancy.
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