A male patient 40 year-old in check-up was detected a 39x45 mm mass nearby the head of pancreas by ultrasound. Sonologist noted a mesenteric tumor or GIST.
MRI confirmed a retroperitoneal tumor or mesenteric tumor.
Endoscopic surgery removed a 4.5cm lymph node tumor. Gross specimen section is brownwhite and microscopic result is lymph node Castleman disease.
