Pneumosinus dilatans.
Pneumosinus dilatans is an extremely rare condition in which facial deformity is caused by gross enlargement of apparently normal paranasal sinuses. To our knowledge, this is the first case to be reported in the English literature.
D000328:Adult; D003937:Diagnosis, Differential; D005626:Frontal Sinus / Q000473:pathology / Q000601:surgery; D006801:Humans; D006984:Hypertrophy / Q000175:diagnosis / Q000473:pathology / Q000601:surgery; D008297:Male; D010254:Paranasal Sinus Diseases / Q000175:diagnosis* / Q000473:pathology / Q000601:surgery