Infarcted angiomatous nasal polyps

Angiomatous nasal polyps are a rarely reported subtype of inflammatory sinonasal polyps that are characterized by extensive vascular proliferation and ectasia. Compromise of their vascular supply may occasionally lead to infarction, resulting in clinical, radiological and pathological features that...

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Bibliographic Details
Published in:European archives of oto-rhino-laryngology 2005-03, Vol.262 (3), p.225-230
Main Authors: SHEAHAN, Patrick, CROTTY, Paul L, HAMILTON, Sam, COLREAVY, Michael, MCSHANE, Donald
Format: Article
Language:English
Subjects:
Adult
Biological and medical sciences
Diagnosis, Differential
Hemangioma - blood supply
Hemangioma - pathology
Hemangioma - surgery
Humans
Infarction - pathology
Magnetic Resonance Imaging
Male
Medical sciences
Nasal Obstruction - diagnosis
Nasal Polyps - pathology
Nasal Polyps - surgery
Otorhinolaryngology. Stomatology
Paranasal Sinus Neoplasms - blood supply
Paranasal Sinus Neoplasms - pathology
Paranasal Sinus Neoplasms - surgery
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Summary:Angiomatous nasal polyps are a rarely reported subtype of inflammatory sinonasal polyps that are characterized by extensive vascular proliferation and ectasia. Compromise of their vascular supply may occasionally lead to infarction, resulting in clinical, radiological and pathological features that simulate a neoplastic process. In the present paper, the salient characteristics of this unusual entity are described. The clinical, radiological and pathological features of two patients with infarcted angiomatous nasal polyps are presented. Grossly, the polyps had an unusual inhomogenous appearance and texture and were associated with a foul odor. CT findings included bony expansion and destruction. MRI findings included markedly inhomogenous contrast enhancement on T1-weighted images. Histopathologically, both cases showed abundant vascular ectasia, with widespread intraluminal thrombosis and necrosis. Recanalization and reparative changes were also present. Angiomatous nasal polyps are poorly documented in the literature. Although entirely benign, they may simulate neoplastic processes, thus awareness of their existence is of considerable importance.
ISSN:0937-4477
1434-4726
DOI:10.1007/s00405-004-0779-z