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Organized hematoma of the maxillary sinus: A clinicopathologic study of 5 cases

| Reprints
February 12, 2014
by Hidenori Yokoi, MD, PhD; Atsushi Arakawa, MD, PhD; Fumihiko Matsumoto, MD, PhD; Naoko Yokoi, MD, PhD; Katsuhisa Ikeda, MD, PhD; and Naoyuki Kohno, MD, PhD


Organized hematoma of the maxillary sinus is rare. Its pathogenesis is still not clear, and it appears to have multiple causes. We report the clinical, clinicopathologic, and immunohistochemical findings in 5 patients-3 men and 2 women, aged 19 to 68 years (mean: 40.2)-with pathologically proven organized hematoma of the maxillary sinus. In all 5 cases, we were able to successfully perform curative treatment via endoscopic sinus surgery. Our findings suggest that most organized hematomas are angiomatous. Immunohistochemical analysis identified the presence of proliferative activity.

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