A rare non-hereditary condition characterised by gastrointestinal stromal tumours (GIST), pulmonary chondromas and extraadrenal paragangliomas. Less than 100 cases have been reported worldwide. The disease primarily affects young women (mean age of onset 20 years). Most patients initially present with two of the three tumours (incomplete Carney''s triad). The main symptoms at presentation are gastrointestinal bleeding, epigastric pain, anaemia and palpable abdominal mass. These symptoms are related to the GIST, which occur in 99% of cases. Pulmonary chondromas occur in approximately 80% of cases. Secreting paragangliomas (typically extraadrenal and most often mediastinal) occur in approximately 50% of patients. The aetiology is not completely understood. Impaired succinate dehydrogenase (SDH) function resulting from chromosomal losses (but not mutations) has been detected in some patients with Carney''s triad. [from SNOMEDCT_US]

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