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Inverted papilloma with osteogenesis in the anterior ethmoid and frontal sinuses

Published online by Cambridge University Press:  16 July 2009

K Tsuzuki*
Affiliation:
Department of Otolaryngology, Hyogo College of Medicine, Japan
T Nishigami
Affiliation:
Department of Pathology, Hyogo College of Medicine, Japan
H Takebayashi
Affiliation:
Department of Otolaryngology, Hyogo College of Medicine, Japan
A Sakaguchi
Affiliation:
Department of Otolaryngology, Hyogo College of Medicine, Japan
H Oka
Affiliation:
Department of Otolaryngology, Hyogo College of Medicine, Japan
K Fukazawa
Affiliation:
Fukazawa Ear, Nose and Throat Clinic, Kobe, Japan
M Sakagami
Affiliation:
Department of Otolaryngology, Hyogo College of Medicine, Japan
*
Address for correspondence: Dr Kenzo Tsuzuki, Department of Otolaryngology, Hyogo College of Medicine, 1-1 Mukogawa, Nishinomiya, Hyogo, 663-8501, Japan. Fax: +81 798 41 8976 E-mail: kenzo@hyo-med.ac.jp

Abstract

Objective:

We report a rare case of new bone formation (osteogenesis) within an inverted papilloma, occurring in the ethmoid and frontal sinuses.

Method:

The histopathological and radiological findings, differential diagnosis, and treatment of tumour-induced osteogenesis are discussed.

Results:

A 68-year-old man complained of headache and left-sided, purulent rhinorrhoea of five years' duration. On nasal endoscopy, lesions similar to inflammatory nasal polyps were seen. Pre-operative radiological images demonstrated opacification of the left nasal cavity and anterior ethmoid and frontal sinuses, plus a bone-density lesion. The mass with bony lesion was completely removed endoscopically. The mass was histopathologically diagnosed as an inverted papilloma surrounding bony tissue. Furthermore, the histopathological findings (including immature bony tissue rimmed by osteoblasts) indicated an extremely rare case of inverted papilloma induced osteogenesis. Six months after surgery, no recurrence was detected.

Conclusion:

This case highlights the importance of clinical awareness of tumour-induced osteogenesis.

Type
Clinical Records
Copyright
Copyright © JLO (1984) Limited 2009

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