Hypoplastic maxillary sinuses (type I)
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Mild hypoplasia of both maxillary sinuses with well developed infundibular passages as well as both uncinate processes. Findings in keeping with type I hypoplastic maxillary sinuses according to Bolger classification.
Partial opacification of both ethmoidal sinuses with marginal thickening of the maxillary sinuses mucosa. Small osteoma of the left ethmoidal sinus is noted as well.
The normal maxillary sinus volume ranges from 12 to 15 centimeters and its volume is estimated by multiplying the width, length, and depth by .52.