Related Experiment Video
Updated: May 3, 2026

Endoscopic Endonasal Trans-sphenoidal Approach: Minimally Invasive Surgery for Pituitary Adenomas
Published on: January 17, 2018
Organized hematoma of the maxillary sinus: a clinicopathologic study of 5 cases
Hidenori Yokoi1, Atsushi Arakawa, Fumihiko Matsumoto
1Department of Otolaryngology-Head and Neck Surgery, Kyorin University School of Medicine, 6-20-2 Shinkawa, Mitaka, Tokyo 181-8611, Japan. h-yokoi@ks.kyorin-u.ac.jp.
Abstract:
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.
Related Concept Videos
Brain Abscess l: Introduction
Hemorrhagic Stroke ll: Pathophysiology

