BACKGROUND The carbohydrate antigen 19-9 (CA 19-9) is currently the most widely used serum tumor marker in pancreatic cancer (PC). CA 19-9 pretreatment levels as well as CA 19-9 kinetics during systemic chemotherapy can provide prognostic information regarding survival of patients with metastatic PC. CASE REPORTS We report the clinical course of 2 patients with metastatic PC who underwent pal...

Carbohydrate antigen 19-9 (CA 19-9) is a sensitive marker for pancreatic and hepatobiliary malignancies. The highest frequency of elevated serum CA 19-9 levels is found among patients with pancreatic cancer. CA 19-9 has recently been demonstrated to be a marker of digestive tract malignancies. We report the case of a patient with a gastric cancer and a very high serum CA 19-9 level. During lapa...

BACKGROUND Life expectancy of pancreatic ductal adenocarcinoma (PDAC) patients is usually short and selection of the most appropriate treatment is crucial. The aim of this study was to investigate the usefulness of serum CA 19-9 as a surrogate marker under no impress excluding other factors affecting CA 19-9 level other than tumor itself. METHODS We recruited 1,446 patients with PDACs and pat...

Serological tumor markers are useful for detection of malignancies and evaluation of disease progression. However, some markers are rarely elevated in patients with benign diseases and without malignancies. We herein present a case of a liver abscess with a highly elevated carbohydrate antigen (CA 19-9) level in both the serum and abscess fluid. The serological level of CA 19-9 decreased with t...

CA 19-9 is a widely used tumor marker. However, an elevation in serum CA 19-9 can occur in some patients with benign disorders such as cholecystolithiasis in the absence of tumor. We treated a case of acquired ureteral stone-induced giant hydronephrosis with markedly elevated serum CA 19-9 values. After nephrectomy, the serum CA 19-9 level returned to normal. No malignant cells were found in th...

BACKGROUND The measurement of carbohydrate antigen 19-9 (CA 19-9) is recommended for the diagnosis and follow-up of pancreatic cancer. However, increased CA 19-9 has also been reported in patients with various benign diseases of the lung. We aimed to elucidate the pulmonary radiographic abnormalities and laboratory results associated with increased concentrations of CA 19-9. METHODS This stud...

OBJECTIVE The purpose of this study was to evaluate the diagnostic efficiency of colorectal carcinoma (CRC) with the tumor markers Carcinoembryonic Antigen (CEA) and Carbohydrate Antigen 19-9 (CA 19-9), in addition to investigating whether CA 19-9 can be used to screen the disease process in patients with CRC who had no elevation of CEA levels. METHODS Serum levels of CEA and CA 19-9 were mea...

Context CA 19-9 is widely used as tumor marker of pancreatic cancer. Extra-pancreatic tumors with increased serum levels of CA 19-9 are uncommon but should be taken into consideration in some cases. Case report We present an asymptomatic case of highly elevated serum CA 19-9 related to lung adenocarcinoma but not to pancreatic tumors. The serum CA 19-9 level returned to nearly normal after chem...

Introduction CA 19-9 is used as a tumor marker in colon, pancreas, biliary, and gastric cancers. Laryngeal cancer is the most common malignant epithelial tumor among head and neck cancers and has no specific tumor marker. Case report A 66-year-old male patient had severe reflux symptoms during 5 years and had an isolated CA 19-9 elevation. Follow-up analysis revealed that he had larynx cancer...

BACKGROUND We sought to investigate the efficacy of serum D-dimer, fibrinogen, and CA19-9 for postoperative monitoring and prediction of survival in patients with resectable pancreatic carcinoma (PC). METHODS One hundred and nineteen patients with resectable PC were enrolled. Serum D-dimer, fibrinogen, and CA19-9 values were analyzed before surgery and at the stages of relapse-free and progre...