J Korean Soc Radiol.  2011 Aug;65(2):113-117. 10.3348/jksr.2011.65.2.113.

Positron Emission Tomography-CT, CT, and MR Imaging Findings of Tumor-Mimicking Organized Hematoma in the Maxillary Sinus: Two Case Reports

• Park JY
• Lee IH
• Song CJ
• Kim K
• Kim SS

• KMID: 1443472
• DOI: http://doi.org/10.3348/jksr.2011.65.2.113

Abstract

Here in, we report two cases of organized hematoma in the maxillary sinus mimicking inverted papilloma. These cases presented as heterogeneously enhancing, expansile masses on computed tomography and magnetic resonance imaging, and also evidenced mild uneven hypermetabolism on positron emission tomography-computed tomography. Organized hematoma should be included in the differential diagnosis of inverted papilloma.

MeSH Terms

Diagnosis, Differential
Electrons
Hematoma
Magnetic Resonance Imaging
Magnetic Resonance Spectroscopy
Maxillary Sinus
Papilloma, Inverted
Positron-Emission Tomography

Figure

• 

  Fig. 1 MR, PET imaging, and histopathologic findings for case 1. A. Coronal T2-weighted fast spin-echo image depicts a heterogeneous high-signal intensity mass (arrow) with a hypointense peripheral rim in the left maxillary sinus. B, C. Coronal T1-weighted spin-echo image and contrast-enhanced T1-weighted spin-echo coronal images show a highly heterogeneously enhancing mass (arrow) in the left maxillary sinus. D. PET-CT axial image shows subtle uneven FDG uptake (maximum SUV = 2.7) in the mass (arrow). E. Hematoxylin-eosin staining (× 100) shows endothelialization of the organized hematoma from case 1. Note.-FDG = fluorodeoxyglucose, PET = positron emission tomography, SUV = standard uptake value

• 

  Fig. 2 MR and PET imaging for Case 2. A. Axial T2-weighted fast spin-echo image shows a cauliflower-shaped, heterogeneous hyperintense mass with a dark signal at the peripheral rim. B. PET-CT axial image shows increased FDG uptake (maximum SUV = 4.3) at the peripheral portion of the mass (arrow). C. Hematoxylin-eosin staining (× 100) shows organized thrombus replaced by vascularized fibrotic tissue. Note.-FDG = fluorodeoxyglucose, PET = positron emission tomography, SUV = standard uptake value

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