A 28-year-old woman complained of epigastric pain and constitutional syndrome of one month of evolution.
CT showed a 15 x 13 x 7 cm mass dependent of the ascending colon with bilobar liver metastases; a right hemicolectomy with liver biopsy was performed.
Pathological examination showed a spindle cell tumor with high mitotic activity, which after ultrastructural examination and IHC was diagnosed as NCG.
Adjuvant treatment with imatinib 400 mg daily orally was performed.
At the six-month follow-up CT, a partial reduction of liver metastases was demonstrated, at one year a complete remission and after three years there are no data of local or distant recurrence.
