A 54-year-old man presented with a painful lesion on the right posterior calf with MRI identifying a 5 cm lesion in the medial head of the gastrocnemius. He underwent wide local excision of the tumour, and the final pathology was consistent with atypical granular cell tumour. Three years later, he developed a recurrent right popliteal mass. Complete staging workup also identified multiple lung nodules and a caecal polyp that were consistent with metastatic granular cell tumour. He was started on pazopanib and deemed a poor candidate for palliative resection due to encasement of the popliteal vessels. The patient refused above-the-knee amputation (AKA) at that point and was evaluated for isolated limb infusion as an alternative. He received three cycles of isolated limb infusion within a 2-year period and achieved good response from the first two cycles. He underwent AKA 4 years after his diagnosis of malignant granular cell tumours and is currently doing well.

Original languageEnglish (US)
Article number224618
JournalBMJ case reports
StatePublished - 2018

All Science Journal Classification (ASJC) codes

  • General Medicine


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