Hostname: page-component-6766d58669-6mz5d Total loading time: 0 Render date: 2026-05-15T02:10:55.922Z Has data issue: false hasContentIssue false

Organised haematoma of the maxillary sinus: pathophysiological differences suggesting a new aetiological hypothesis

Published online by Cambridge University Press:  03 April 2013

S Urata*
Affiliation:
Department of Otorhinolaryngology, Medical Center, Saitama Medical University, Japan
M Ohki
Affiliation:
Department of Otorhinolaryngology, Medical Center, Saitama Medical University, Japan
T Tsutsumi
Affiliation:
Department of Otorhinolaryngology, Medical Center, Saitama Medical University, Japan
S Kikuchi
Affiliation:
Department of Otorhinolaryngology, Medical Center, Saitama Medical University, Japan
*
Address for correspondence: Dr Shinji Urata, Department of Otorhinolaryngology, Medical Center, Saitama Medical University, 1981 Kamoda, Kawagoe City, Saitama 350-8550, Japan Fax: +81 049 225 6312 E-mail: uraurashinjix@nifty.com

Abstract

Background and objectives:

Organised haematomas of the maxillary sinus are rare, non-neoplastic, haemorrhagic lesions which can extend into the nasal cavity and/or the other paranasal sinuses. This study aimed to investigate the pathology of maxillary sinus organised haematoma, and also proposes a new aetiological hypothesis based on the observed pathology.

Methods:

Biopsies, computed tomography, magnetic resonance imaging and post-surgical histopathological examination of resected specimens were carried out.

Conclusion:

Distinct pathological differences were observed between the basal and peripheral portions of organised haematomas. We propose that an organised haematoma originates from the exudation of blood components between vascular endothelial cells. As a result, the basal portion consists of aggregated, dilated vessels around the natural ostium of the maxillary sinus. In addition, pseudovessels, without endothelial cells, arise from endocapillary vessels within the haematoma. Exudation of additional blood components from the pseudovessels advances the growth of the organised haematoma.

Information

Type
Clinical Records
Copyright
Copyright © JLO (1984) Limited 2013 

Access options

Get access to the full version of this content by using one of the access options below. (Log in options will check for institutional or personal access. Content may require purchase if you do not have access.)

Article purchase

Temporarily unavailable