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October 1969

Two Cases of Leiomyosarcoma of the Maxillary Sinuses

Author Affiliations

Nagoya, Japan
From the departments of surgery (Dr. Kawabe and Kondo) and pathology (Dr. Hosoda), Aichi Cancer Center, Nagoya, Japan.

Arch Otolaryngol. 1969;90(4):492-495. doi:10.1001/archotol.1969.00770030494016

LEIOMYOSARCOMA of the nose, paranasal sinuses, and nasopharynx is an unusual but distinctive entity. The Table contains data on the five published cases.1-5 This report presents two additional cases of leiomyosarcoma of the maxillary sinus with confirmation of myofibrils in the tumor cells by electronmicroscopic observation.

Report of Cases  Case 1.—A 60-year-old man was admitted to Nagoya City University Hospital on April 30, 1960, with the complaint of swelling of the left cheek. Initial roentgenogram showed a mass involving the left paranasal bone. Under a diagnosis of left malignant maxillary tumor, the total maxillectomy was performed on May 10, 1960. A red-colored tumor about 5 cm in diameter was excised with adjacent tissues. The surface of the tumor was covered by mucous membrane and sharply circumscribed from the surrounding stroma. On microscopic examination, the tumor cells which were composed of interlacing bands and bundles of spindle cells with long

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