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Hematoma-like mass of the maxillary sinus
Mizuho Yagisawa1, Junichi Ishitoya, Mamoru Tsukuda
1Department of Biology and Function in the Head and Neck, Graduate School of Medicine, Yokohama City University, Japan.
Acta Oto-Laryngologica
|April 19, 2006
Summary
A novel non-neoplastic, hemorrhagic lesion in the maxillary sinus, termed "hematoma-like mass," has been identified. This condition, characterized by dilated vessels and hemorrhage, requires differentiation from hemangioma and hematoma.
Area of Science:
- Pathology
- Otolaryngology
- Radiology
Background:
- Maxillary sinus lesions can present with complex imaging and histological features.
- Differentiating benign from malignant conditions is crucial for appropriate patient management.
Purpose of the Study:
- To characterize the clinicopathological features of a distinct non-neoplastic, hemorrhagic maxillary sinus lesion.
- To propose a new nomenclature for this entity based on its unique presentation.
Main Methods:
- Retrospective review of six surgically treated patients with maxillary sinus masses.
- Analysis of CT and MRI findings, macroscopic appearance, and histological examination.
- Inclusion criteria focused on expanding unilateral lesions with bone involvement and heterogeneous, hemorrhagic masses.
Main Results:
- Clinical presentation mimicked maxillary carcinoma, but CT/MRI aided in differentiating from malignancy.
- Surgical resection was facilitated by a firm tumor capsule.
- Histological findings revealed a mixture of dilated vessels, hemorrhage, and fibrin exudation.
Conclusions:
- A unique non-neoplastic, hemorrhagic maxillary sinus lesion is described.
- The proposed term 'hematoma-like mass of the maxillary sinus' reflects its histological characteristics.
- Distinguishing this entity from hemangioma and hematoma is essential.
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