A 71-year-old male patient was diagnosed with aKIT-positive gastrointestinal stromal tumor (GIST). The patient received adjuvant imatinib but developed several subcutaneous and intra-abdominal tumor lesions after 4 months of treatment. A T-cell lymphoproliferative disorder was suspected. The authors discuss the potential of imatinib to induce reversible clonal T-cell proliferations in patients with GIST who develop new tumor manifestations that are suspicious for relapse.
- Mareike Verbeek
- Falko Fend
- Justus Duyster