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An Official Publication of the Indian Association of Oral and Maxillofacial Pathologists

CASE REPORT Table of Contents   
Year : 2020  |  Volume : 24  |  Issue : 1  |  Page : 168-171
Bisphosphonate-related spindle cell carcinoma and osteonecrosis

1 Department of Oral and Maxillofacial Radiology, School of Dentistry, Tehran, Iran
2 Department Oral and Maxillofacial Radiology, Tehran University of Medical Sciences, Tehran, Iran
3 Department of Oral and Maxillofacial Surgery, School of Dentistry; Department of Head and Neck Surgical Oncology and Reconstructive Surgery, School of Medicine, Tehran University of Medical Sciences, Tehran, Iran

Correspondence Address:
Naeimeh Nikfarjam Nouri
Department of Oral and Maxillofacial Radiology, School of Dentistry, Tehran
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Source of Support: None, Conflict of Interest: None

DOI: 10.4103/jomfp.JOMFP_346_19

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A 48-year-old female with a complaint of persistent pain referred to the Imam Khomeini (Tehran, Iran) in 2018. Based on the radiographic findings, radiolucent lesion found in the right mandible and she had alendronate administration approximately for 10 years. Since the past 6 months, the lesion detected in the right mandible. According to the computed tomography scan, a large lytic destructive lesion with a soft-tissue component was seen at the right mandibular ramus. Microscopic examinations revealed the proliferation of anaplastic spindle-shaped cells arranged in interlacing bundles and whorled patterns. Nuclear polymorphism, scattered cells with hyperchromatic nuclei and increased mitotic activity were notable. Immunohistochemistry findings for tissue section composed of spindle cell proliferation revealed Ki67 (20% positive in hotspots), scattered positive right side incisional biopsy was done. The observation revealed hyperplastic and disorganized squamous epithelial lesion, suggestive of spindle squamous cell carcinoma and osteonecrosis in this patient.

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Journal of Oral and Maxillofacial Pathology | Published by Wolters Kluwer - Medknow
Online since 15th Aug, 2007