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Primary intraosseous odontogenic carcinoma with osteoid/dentinoid formation
1Department of Oral Pathology and Microbiology, S.D.M College of Dental Sciences, Dharwad 580009, Karnataka, India.
Summary
Primary intraosseous carcinoma, a rare malignant odontogenic tumor, can arise unexpectedly in the posterior maxilla. This case highlights an unusual presentation of this rare cancer, emphasizing its unique cellular and mineralized characteristics.
Area of Science:
- Oral pathology
- Oncology
- Odontogenic tumors
Background:
- Primary intraosseous carcinoma (PIC) is an exceedingly rare malignant odontogenic tumor.
- PIC is believed to originate from odontogenic epithelium remnants.
- These tumors typically present in the mandible, making maxillary occurrences exceptionally uncommon.
Observation:
- This report details an unusual case of PIC arising de novo.
- The tumor was located in a previously unreported site within the posterior maxilla.
- Histopathological examination revealed sheets of pleomorphic round-to-ovoid cells.
Findings:
- The tumor exhibited significant osteoid and dentinoid matrix formation.
- Foci of globular mineralization were observed within the tumor matrix.
- These features contribute to the unique histopathological profile of this maxillary PIC.
Implications:
- This case expands the known anatomical distribution of primary intraosseous carcinoma.
- Understanding rare presentations is crucial for accurate diagnosis and treatment planning.
- Further research into the etiology and behavior of maxillary PIC is warranted.