Highlights • This is an extremely rare case and quite challenging both to diagnose and to treat.• Immunostaining is sometimes needed to confirm the diagnosis.• Contrary to most similar reported… Click to show full abstract
Highlights • This is an extremely rare case and quite challenging both to diagnose and to treat.• Immunostaining is sometimes needed to confirm the diagnosis.• Contrary to most similar reported case, the tumor recurred after surgery.• Although rarely needed, chemotherapy may successfully prevent tumor progression.
               
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