1. Extramedullary hematopoiesis: a rare occurrence in the sinonasal tract.
- Author
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Bizzoni A, Lombardi D, Maroldi R, Incardona P, and Nicolai P
- Subjects
- Adult, Diagnosis, Differential, Endoscopy, Ethmoid Sinus pathology, Fibroma pathology, Fibroma physiopathology, Granuloma, Plasma Cell pathology, Granuloma, Plasma Cell physiopathology, Humans, Magnetic Resonance Imaging, Male, Maxillary Sinus pathology, Maxillary Sinus Neoplasms pathology, Maxillary Sinus Neoplasms physiopathology, Paranasal Sinus Diseases pathology, Paranasal Sinus Diseases physiopathology, Sphenoid Sinus pathology, Tomography, X-Ray Computed, Ethmoid Sinus physiopathology, Fibroma diagnosis, Granuloma, Plasma Cell diagnosis, Hematopoiesis, Extramedullary physiology, Maxillary Sinus physiopathology, Maxillary Sinus Neoplasms diagnosis, Paranasal Sinus Diseases diagnosis, Sphenoid Sinus physiopathology
- Abstract
Extramedullary hematopoiesis (EMH) is a systemic reaction to inadequate hematopoiesis. We report two exceedingly rare cases of EMH involving the paranasal sinuses. The first patient, a 30-year-old man, presented with a maxillary sinus mass. The lesion was excised by endoscopic surgery: definitive histology identified foci of EMH within an inflammatory fibromyxoid pseudotumor. The second case occurred in a 29-year-old man affected by intermediate beta-thalassemia. He was hospitalized with a diagnosis of sphenoid sinus mucocele secondary to an ethmoid lesion. The patient underwent endoscopic excision of the mass and drainage of the sphenoid mucocele. At definitive histology, a diagnosis of EMH was established. Herein, the presenting modalities, imaging profile, and treatment options of this rare EMH localization are reviewed., (Copyright (c) 2009 Elsevier Ireland Ltd. All rights reserved.)
- Published
- 2010
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