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Oncogenic osteomalacia from pterygopalatine fossa mass

Published online by Cambridge University Press:  02 March 2009

C R Savage  and
L A Zimmer
C R Savage
Affiliation:
Department of Otolaryngology, Head and Neck Surgery, University of Cincinnati Medical Center, Ohio, USA
L A Zimmer*
Affiliation:
Department of Otolaryngology, Head and Neck Surgery, University of Cincinnati Medical Center, Ohio, USA
*
Address for correspondence: Dr Lee A Zimmer, University of Cincinnati, Department of Otolaryngology-Head and Neck Surgery, 231 Albert Sabin Way, ML 0528, Cincinnati, OH 45267, USA. Fax: +1 513 558 4477 E-mail: lee.zimmer@uc.edu
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Abstract

Introduction:

Oncogenic osteomalacia, or tumour-induced osteomalacia, is an uncommon cause of osteomalacia. It has been reported to occur in patients with hypophosphataemia due to excess renal phosphate excretion secondary to mesenchymal tumours. Occurrence of this pathological process in the head and neck is extremely rare.

Methods:

Case report and literature review.

Results:

We present a case of a 73-year-old woman with tumour-induced osteomalacia. She was initially followed by the endocrinologists for osteomalacia and pathological fractures. An indium-111 pentetreotide scan showed activity in the left pterygopalatine fossa. A mass was endoscopically resected, and the histopathological appearance was consistent with a haemangiopericytoma. Following surgery, the patient's hypophosphataemia and vitamin D deficiency corrected and her symptoms resolved.

Conclusions:

Oncogenic osteomalacia, or tumour-induced osteomalacia, is a rare entity in the head and neck. Current research is elucidating the mechanism by which phosphaturic wasting occurs. In most patients, symptoms resolve once the offending tumour is removed.

Keywords

OsteomalaciaHead And Neck NeoplasmsEndoscopyPterygopalatine FossaHaemangiopericytoma
Type
Clinical Records
Information
The Journal of Laryngology & Otology , Volume 123 , Issue 9 , September 2009 , pp. 1052 - 1054
Copyright
Copyright © JLO (1984) Limited 2009

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Footnotes

Presented at the American Rhinologic Society Annual Meeting, 15 September 2007, Washington DC, USA.

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