Graves' eye infiltrate: Findings on extraocular muscle biopsy

Disrupted muscle fibers and an area of inflammatory cell accumulation in the superior rectus muscle of a patient with ophthalmic Graves' disease. The sample was obtained at the time of decompression surgery. The extraocular muscles are swollen, and some muscle fibers show loss of striation, fragmentation, and infiltration with lymphocytes, most of which are T lymphocytes.