Granular cell tumor with symptomatic cardiac involvement can be malignant or benign.
Fujise
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D000328:Adult; D005260:Female; D016586:Granular Cell Tumor / Q000150:complications*; D006327:Heart Block / Q000209:etiology*; D006338:Heart Neoplasms / Q000150:complications*; D006801:Humans; D012849:Sinoatrial Node