The patient, a coal miner of 54 years old, who had complained of headache, diplopia, and exophthalmus and blindness of the left eye for four years was in May 1961 admitted to the Ophthalmological Clinic, Yamaguchi University and had an operation under the diagnosis of left orbital tumor.
He was transferred to the Otorhinolaryngological Clinic thereafter and an extranasal operation of the frontal, ethmoidal and sphenoidal sinuses was performed. The operation disclosed mucocele of the sphenoidal sinus and pyocele of the ethmoidal sinus.