Kanser antijen 19-9 safra kanali, kolon, mide, over, hepatosellüler, özofagus ve pankreas kanserleri gibi malign durumlarda yüksek seviyelerdegörülebilen bir tümör göstergesidir. Pankreas kanseri ayirici tanisi veyine pankreas kanserinde tedaviye cevap ve nüksün degerlendirilmesinde kullanilir. Yüksek seviyeler safra yolu obstrüksiyonu, kolanjit, inflamatuvar barsak hastaligi, akut veya kronik pankreatit, karaciger sirozu,kistik fibrozis ve tiroid hastaliklari gibi benign durumlarda da görülebilir.Kanser antijen 19-9 yüksekligi ile birlikte olan nadir bir durum da dalakkistleridir. Olgumuz nadir olmasi ve Kanser antijen 19-9‘un yayinlanilanbenzer olgulardan yüksek seviyelerde olmasi sebebiyle sunulmustur.
Cancer antigen 19-9 is a tumor marker present at high levels in the bileduct, colorectal, gastric, and hepatocellular cancer than esophagus orpancreas cancer. It is used to confirm the diagnosis of pancreas cancer,to assess the clinical response to the treatment, and to evaluate therecurrence of pancreatic cancer. High levels can also be seen in benignconditions, such as biliary tract obstruction, cholangitis, inflammatorybowel disease, acute or chronic pancreatitis, liver cirrhosis, cystic fibrosis, or thyroid diseases. Another rare condition which is associated withthe high level of cancer antigen 19-9 is the splenic cyst. Hence, weare submitting this case report of splenic cyst because of its rarenessand similarities to previously published cases with high levels of cancerantigen 19-9.