Lene Mellemkjaer

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BACKGROUND Diabetes has been associated with an increased risk of several cancers, notably cancers of the pancreas, liver, endometrium, and kidney. Since most previous studies have involved a limited sample size or focused on specific cancer sites, we conducted a comprehensive assessment of the risk of cancer in a nationwide cohort of diabetics in Denmark.(More)
BACKGROUND Dermatomyositis and polymyositis are associated with cancer, but previous nationwide studies have not had sufficient cases to test the association between myositis and specific cancer types. Our aim was to investigate the risk of specific cancer types in individuals with dermatomyositis and polymyositis. METHODS We did a pooled analysis of(More)
BACKGROUND Selective serotonin reuptake inhibitors (SSRIs) have been suspected of increasing the risk of bleeding. We examined the risk of upper gastrointestinal tract (GI) bleeding with use of antidepressant medication. METHODS All users of antidepressants in the county of North Jutland, Denmark, from January 1, 1991, to December 31, 1995, were(More)
Recently, the incidence of intrahepatic cholangiocarcinoma (ICC) has been increasing in a number of developed (Western) countries. However, risk factors in these low-risk populations are poorly understood. In this nationwide population based case-control study in Denmark, we examined the relationship between selected medical conditions and subsequent ICC(More)
BACKGROUND Little is known about the prognosis of cancer discovered during or after an episode of venous thromboembolism. METHODS We linked the Danish National Registry of Patients, the Danish Cancer Registry, and the Danish Mortality Files to obtain data on the survival of patients who received a diagnosis of cancer at the same time as or after an(More)
Among 14 088 patients, with a primary diagnosis of Parkinson's disease during the period 1977–98 identified from the National Register of Patients, 1282 cancers were subsequently recorded in the Danish Cancer Registry, compared with 1464 expected, with a standardised incidence ratio (SIR) of 0.88 (95% confidence interval (CI), 0.8–0.9). Significantly(More)
OBJECTIVE To investigate whether systemic lupus erythematosus (SLE) is associated with non-Hodgkin's lymphoma or other malignant neoplasms. METHODS Data on a cohort of 1,585 patients with SLE from the nationwide Danish Hospital Discharge Register were linked to information in the Danish Cancer Registry to determine the occurrence of cancer during up to 15(More)
The aim of this study was to examine the cancer pattern in a large group of patients with rheumatoid arthritis (RA). A follow-up study of cancer incidence in RA was conducted within a cohort of 20,699 patients recorded in the Danish Hospital Discharge Register during 1977-1987 by linkage with the Danish Cancer Registry through 1991. There were consistent(More)
OBJECTIVE To describe the incidence of malignancies in a cohort of Danish patients with Wegener's granulomatosis (WG) and to investigate the cancer risk associated with cyclophosphamide (CYC) -therapy in WG. METHODS In total, 293 patients diagnosed with WG between 1973 and 1999 were studied. Cancer incidence in the cohort was assessed through 2003 by(More)
OBJECTIVE Although endometriosis and uterine leiomyomas are common conditions, the extent to which either is associated with certain types of malignancies remains uncertain. METHODS Using record linkage techniques, we assessed the relationships between hospital and outpatient admissions for endometriosis or leiomyomas and the development of ovarian and(More)