GALACTORRHEA AND AMENORRHEA DUE TO AN INTRADURAL NEURINOMA ORIGINATING FROM A THORACIC INTERCOSTAL NERVE RADICLE

A 42-year-old woman had galactorrhoea and amenorrhoea, Four years prev iously she complained of sensory disturbance of her legs, with gait di sturbance. Serum PRL level was 1408 mU/l. Magnetic resonance imaging s howed a spindle-shaped mass in the spinal canal at the level of the ni nth thoracic vertebra. The tumour was removed and histologically was f ound to be a neurinoma originating from the right ninth intercostal ne rve radicle. Soon after the operation, galactorrhoea, amenorrhoea and neurological symptoms disappeared, Prolactin levels normalized at 346 mU/l. These findings indicate that hyperprolactinaemia occurred as a r esult of the stimulation of afferent fibres from an intercostal nerve in a patient with intradural neurinoma of the intercostal nerve radicl e.