[Localized muscular hypertrophy in a familial form of sarcoidosis]

Muscular hypertrophy, rarely reported in muscular sarcoidosis, is usually associated with the myositic, myopathic and nodular types. We report a case with an isolated localised muscular hypertrophy simulating a tumor formation developed after repetitive efforts, in a familial context of sarcoidosis. MRI shows muscular high intensity lesions in the thighs and calves, and after treatment, central areas of low intensity signal. Muscular biopsy confirms diagnosis of sarcoidosis. Gallium-67 scintigraphy shows systemic extension of disease. This case highlights the usefulness of recent imaging techniques in diagnostic strategy and follow up.