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. 2019 Nov 2;8(11):1852. doi: 10.3390/jcm8111852

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© 2019 by the authors.

Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (http://creativecommons.org/licenses/by/4.0/).

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CT images showing three patterns of MHS related to OFFs associated with head trauma. (A) Type 1: high-attenuation opacity mixed with mottled gas in the left maxillary sinus (arrow) in a 52-year-old male with motorcycle crash-related head trauma. (B) Type 2: air–fluid level in the left maxillary sinus (arrow) in a 26-year-old female with motor vehicle collision-related head trauma. (C) Type 3: full opacification of the left maxillary sinus (arrow) in a 79-year-old male with fall accident-related head trauma.