Maternal and infant pregnancy outcomes in women with psoriatic arthritis: a Swedish nationwide cohort study.

OBJECTIVE: Studies on pregnancy outcomes in psoriatic arthritis (PsA) are scarce and typically of small size. Available studies have reported conflicting results. The aim of this study was to describe maternal and infant pregnancy outcomes among women with PsA compared with women without PsA. DESIGN: Nationwide cohort study. SETTING: Nationwide Swedish registers. POPULATION: A total of 41 485 singleton pregnancies in 1997-2014, of which 541 pregnancies were identified with PsA exposure and 40 944 pregnancies were unexposed. METHODS: By linkage of national health and population register data, we obtained information on individual pregnancies and compared outcomes among pregnancies with PsA and non-PsA pregnancies. Relative risks were estimated by odds ratios (ORs) with 95% CIs using a generalised linear regression model with generalised estimating equations. Adjustments were made for maternal factors and calendar year of birth. MAIN OUTCOME MEASURES: Maternal and infant pregnancy outcomes. RESULTS: Pregnancies to women with PsA had increased risks of preterm birth (adjusted OR 1.63; 95% CI 1.17-2.28), elective and emergency caesarean deliveries (adjusted OR 1.47; 95% CI 1.10-1.97 and adjusted OR 1.43; 95% CI 1.08-1.88, respectively) compared with non-PsA pregnancies. No increased risks were observed for pre-eclampsia, stillbirth or other infant outcomes apart from preterm birth. CONCLUSION: The majority of women with PsA have uneventful pregnancies with respect to adverse outcomes. In the present study, we found increased risks of preterm birth and caesarean delivery compared with non-PsA pregnancies. TWEETABLE ABSTRACT: Women with psoriatic arthritis have uneventful pregnancies but are at increased risk of preterm birth and caesarean delivery.

Complete mesocolic excision in right-sided colon cancer does not increase severe short-term postoperative adverse events.

AIM: The aim was to assess whether complete mesocolic excision (CME) in patients with right-sided colon cancer is related to short-term mortality or postoperative adverse events requiring reoperation. The complete mobilization of an integral mesocolon and central ligation of blood vessels are essential steps in CME surgery. The resultant specimen, with an intact mesocolic fascia and a high number of harvested lymph nodes, is believed to be oncologically favourable. However, it has been suggested that CME surgery may increase the risk of intra-operative severe adverse events, due to exposure of vital retroperitoneal organs and large blood vessels. METHOD: In a population-based, nested case-control study, all residents in the Stockholm County operated for right-sided colon cancer from 2004 until 2012 were identified from the Swedish Colorectal Cancer Registry. Patients who died within 90 days after surgery or were reoperated within 30 days after surgery, or during the index hospital stay, were defined as cases. Two controls per case were randomly sampled and individually matched for age, sex, TNM stage and emergency vs elective surgery. Exposure status (CME surgery) was assessed from original surgical reports. RESULTS: The estimated proportion of CME surgery was 14.8% (35 of 236) for cases and 19.5% (92 of 473) for controls. The unadjusted OR for short-term mortality or reoperation after CME surgery was 0.72 (95% CI: 0.47-1.10; P = 0.15). The ORs were lower in the late part of the study (0.51; 95% CI: 0.26-1.01) and in high volume hospitals (0.61, 95% CI: 0.35-1.06). CONCLUSIONS: The present study does not indicate that CME surgery is associated with an increased risk of severe adverse events such as 90-day mortality or reoperation.

Editor's Choice - Dual Antiplatelet Therapy Improves Outcome in Diabetic Patients Undergoing Endovascular Femoropopliteal Stenting for Critical Limb Ischaemia.

OBJECTIVE: The purpose of this study was to analyse the effect of dual antiplatelet therapy (DAPT) compared to aspirin on outcome after endovascular interventions in patients with CLI. METHODS: This was a population based retrospective nationwide cohort analysis. Several linked national databases in Sweden: Swedish National Vascular Registry, Prescribed Drug Registry and National Discharge Registry. A total of 1941 patients (median age 79; range 43-103 years; women 58%) were identified with CLI who had undergone primary femoropopliteal endovascular intervention between 2006 and 2012. Of these, 599 (31%) patients were treated after the intervention with DAPT (aspirin and clopidogrel) and 1342 (69%) patients were treated with aspirin only. Percutaneous transluminal angioplasty (PTA) was performed in 1131 patients (58%), stenting in 633 patients (33%), and subintimal angioplasty (SAP) in 177 patients (9%). RESULTS: DAPT was given after PTA, stenting, and SAP to 17% (n = 188), 53% (n = 334), and 44% (n = 77) of the patients, respectively. During the study period, 77 patients (13%) with DAPT and 228 patients (17%) with aspirin underwent a major amputation. Patients receiving DAPT after stenting had a lower rate of amputation (HR 0.56; 95% CI 0.36-0.86) than patients receiving aspirin alone. In the subgroup analysis, the protective effect of DAPT on amputation seemed to be confined to patients with diabetes mellitus receiving a stent (HR 0.26; 95% CI 0.13-0.52; p < .001). DAPT after PTA or SAP did not influence limb salvage, and there was no overall difference in mortality. There was no significant difference in bleeding complications between DAPT and aspirin. CONCLUSION: DAPT with aspirin and clopidogrel compared to aspirin alone was associated with a lower amputation rate but not a higher bleeding rate in patients with diabetes and CLI after endovascular femoropopliteal stenting.

Risk of second primary cancer in patients treated with radiotherapy for rectal cancer.

BACKGROUND: Many patients with rectal cancer receive radiotherapy (RT) to reduce the risk of local recurrence. Radiation may give rise to adverse effects, including second primary cancers. In view of the divergent results of previous studies, the present study evaluated the risk of second primary cancer following RT in all randomized RT rectal cancer trials conducted in Sweden and in the Swedish ColoRectal Cancer Registry (SCRCR). METHODS: Patients included in five randomized trials and the SCRCR were linked to the Swedish Cancer Registry. Cox regression models estimated the hazard ratio (HR) of second primary cancer among patients who received RT compared with those who did not. RESULTS: A total of 13 457 patients were included in this study; 7024 (52·2 per cent) received RT and 6433 (47·8 per cent) had surgery alone. Overall, no increased risk of second primary cancer was observed with RT (HR 1·03; 95 per cent c.i. 0·92 to 1·15), independently of follow-up time and location within or outside of the irradiated volume. In the randomized trials, with longer follow-up (maximum 31 years), a slight increase was observed outside of (HR 1·33, 1·01 to 1·74) but not within (HR 1·11, 0·73 to 1·67) the irradiated volume. Irradiated men had a lower risk of prostate cancer than those treated with surgery alone (HR 0·68, 0·51 to 0·91). CONCLUSION: Overall, there was no increased risk of second primary cancer following RT for rectal cancer within or outside of the irradiated volume up to 20 years of follow-up. Men with rectal cancer who received RT had a reduced risk of prostate cancer.

Improved survival after an educational project on colon cancer management in the county of Stockholm--a population based cohort study.

INTRODUCTION: Outcomes in rectal cancer have improved dramatically after the introduction of total mesorectal excision (TME). Recently, the TME concept has been transformed into that of complete mesocolic excision (CME) in an attempt to improve prognosis for patients with colon cancer. PATIENTS AND METHODS: Multidisciplinary team (MDT) workshops including the CME concept were held annually between 2004 and 2008 at the Karolinska University Hospital. The workshops focused on preoperative staging, surgery and histopathology and included lectures and live surgery sessions. To compare survival before and after the "Stockholm Colon Cancer Project" all patients diagnosed with a right sided colon cancer between January 1, 2001 and December 31, 2003 (Group 1) and from January 1, 2006 until December 31, 2008 (Group 2) in Stockholm were identified from the Swedish ColoRectal Cancer Registry (SCRCR). RESULTS: The proportion of patients having a tumour resection and the proportion having emergency surgery was higher in Group 1. There were more early tumours and more R0 resections in Group 2. Overall survival in all diagnosed patients and disease free survival after tumour resection was improved in the second time period. DISCUSSION: Surgical teaching programmes may have an impact on the management and outcome in colon cancer. The exact impact from the "Stockholm Colon Cancer Project" cannot be established, however it is likely that it contributed to the improved survival.

Local recurrence after prone vs supine abdominoperineal excision for low rectal cancer.

AIM: Tumour-involved circumferential resection margins (CRMs) and intra-operative perforation (IOP) are well known risk factors for local recurrence after surgery for low rectal cancer. In conventional abdominoperineal excision (APE) the patient remains in the supine position for the perineal part of the procedure. However, turning the patient to the prone position may improve visualization which potentially might reduce the risk of involved CRMs and IOP and thus improve local control. The study was carried out to assess local recurrence rates after APE in relation to the positioning of the patient during the perineal part of the procedure. METHOD: This cohort study includes 466 patients having APE for low rectal cancer between 2001 and December 2010. Data were retrieved from the regional rectal cancer registry in Stockholm and from a retrospective review of patient files. RESULTS: An incomplete resection was reported in 12.4% after APE in the supine position and in 6.8% after APE in the prone position (P = 0.038). Corresponding figures for IOP were 12.4% and 4.0% (P < 0.001). Prone APE was associated with a 39% relative reduction in local recurrence events compared with APE in the supine position, although the difference was not statistically significant (hazard ratio 0.61, 95% CI 0.27-1.37). CONCLUSION: APE in the prone position reduced the incidence of incomplete resection and IOP, but the study did not find a statistically significant difference in local failure rates related to the position of the patient.

Mucosal healing and mortality in coeliac disease.

BACKGROUND: Coeliac disease (CD), characterised by the presence of villous atrophy (VA) in the small intestine, is associated with increased mortality, but it is unknown if mortality is influenced by mucosal recovery. AIMS: To determine whether persistent VA is associated with mortality in CD. METHODS: Through biopsy reports from all pathology departments (n = 28) in Sweden, we identified 7648 individuals with CD (defined as VA) who had undergone a follow-up biopsy within 5 years following diagnosis. We used Cox regression to examine mortality according to follow-up biopsy. RESULTS: The mean age of CD diagnosis was 28.4; 63% were female; and the median follow-up after diagnosis was 11.5 years. The overall mortality rate of patients who underwent follow-up biopsy was lower than that of those who did not undergo follow-up biopsy (Hazard Ratio 0.88, 95% CI: 0.80-0.96). Of the 7648 patients who underwent follow-up biopsy, persistent VA was present in 3317 (43%). There were 606 (8%) deaths. Patients with persistent VA were not at increased risk of death compared with those with mucosal healing (HR: 1.01; 95% CI: 0.86-1.19). Mortality was not increased in children with persistent VA (HR: 1.09 95% CI: 0.37-3.16) or adults (HR 1.00 95% CI: 0.85-1.18), including adults older than age 50 years (HR: 0.96 95% CI: 0.80-1.14). CONCLUSIONS: Persistent villous atrophy is not associated with increased mortality in coeliac disease. While a follow-up biopsy will allow detection of refractory disease in symptomatic patients, in the select population of patients who undergo repeat biopsy, persistent villous atrophy is not useful in predicting future mortality.

Evaluation of prevalent and incident ovarian cancer co-morbidity.

BACKGROUND: The peak in incidence of ovarian cancer occurs around 65 years and concurrent increasing risk by age for a number of diseases strongly influence treatment and prognosis. The aim was to explore prevalence and incidence of co-morbidity in ovarian cancer patients compared with the general population. METHODS: The study population was patients with ovarian cancer in Sweden 1993-2006 (n=11 139) and five controls per case (n=55 687). Co-morbidity from 1987 to 2006 was obtained from the Swedish Patient Register. Prevalent data were analysed with logistic regression and incident data with Cox proportional hazards models. RESULTS: Women developing ovarian cancer did not have higher overall morbidity than other women earlier than 3 months preceding cancer diagnosis. However, at time of diagnosis 11 of 13 prevalent diagnosis groups were more common among ovarian cancer patients compared with controls. The incidence of many common diagnoses was increased several years following the ovarian cancer and the most common diagnoses during the follow-up period were thromboembolism, haematologic and gastrointestinal complications. CONCLUSION: Women developing ovarian cancer do not have higher overall morbidity the years preceding cancer diagnosis. The incidence of many common diagnoses was increased several years following the ovarian cancer. It is crucial to consider time between co-morbidity and cancer diagnosis to understand and interpret associations.

Increased lymph node harvest in patients operated on for right-sided colon cancer: a population-based study.

AIM: In recent decades, the focus has been on the treatment of rectal cancer with improved surgical techniques. This has resulted in improved results for patients with rectal cancer. Recently, the focus has shifted to colon cancer surgery with the introduction of preoperative staging, new surgical techniques, quality control and enhanced recovery programmes. The change in operative techniques has been most pronounced for patients with tumours on the right side of the colon, with more extensive resections and proximal ligations of the vessels. The aim of this study was to assess the number of analysed lymph nodes and the metastatic index (MI) in patients operated on for right-sided colon cancer in the Stockholm area between 1996 and 2009. METHOD: All patients operated on for cancer of the right colon between January 1996 and December 2009 were divided into three groups based on the year in which they were operated (period 1, 1996-1999; period 2, 2000-2004; and period 3, 2005-2009). The number of lymph nodes and lymph node status were analysed. RESULTS: In total, 3536 patients were operated on for right-sided colon cancer during the study period. There was a significantly lower proportion of emergency operations in the third time period. The mean number of lymph nodes examined increased significantly during the overall study period (seven in period 1, 11 in period 2 and 18 in period 3; P < 0.001). A significant drop in MI was seen during the third time period (0.25, compared with 0.40 in period 1 and 0.40 in period 2; P < 0.001). CONCLUSION: During the study period there was an increase in the number of analysed lymph nodes and a decrease in MI after right-sided hemicolectomies. Further investigations are needed to evaluate the potential impact on short-term and long-term outcome.

Subacute cutaneous lupus erythematosus and its association with drugs: a population-based matched case-control study of 234 patients in Sweden.

BACKGROUND: Numerous case reports about drug-induced (DI) subacute cutaneous lupus erythematosus (SCLE) have been published. Various drug types with different latencies has been proposed as triggers for this autoimmune skin disease. OBJECTIVES: To evaluate the association between exposure to certain suspected drugs (previously implicated to induce SCLE) and a subsequent diagnosis of SCLE. METHODS: We performed a population-based matched case-control study in which all incident cases of SCLE (n=34) from 2006 to 2009 were derived from the National Patient Register. The control group was selected from the general population, matched (1:10) for gender, age and county of residence. The data were linked to the Prescribed Drug Register. Odds ratios (ORs) and 95% confidence intervals (CIs) were calculated for the association between exposures to certain suspected drugs and the development of SCLE. RESULTS: During the 6 months preceding SCLE diagnosis, 166 (71%) of the patients with SCLE had at least one filled prescription of the suspected drugs. The most increased ORs were found for terbinafine (OR 52.9, 95% CI 6.6-∞), tumour necrosis factor-α inhibitors (OR 8.0, 95% CI 1.6-37.2), antiepileptics (OR 3.4, 95% CI 1.9-5.8) and proton pump inhibitors (OR 2.9, 95% CI 2.0-4.0). CONCLUSIONS: We found an association between drug exposure and SCLE. More than one third of the SCLE cases could be attributed to drug exposure. No significant OR was found for thiazides, which might be due to longer latency and therefore missed with this study design. DI-SCLE is reversible once the drug is discontinued, indicating the importance of screening patients with SCLE for potentially triggering drugs. A causal relationship cannot be established from this study and the underlying pathogenesis remains unclear.

Incidence, prevalence and risk factors for peritoneal carcinomatosis from colorectal cancer.

BACKGROUND: This was a population-based cohort study to determine the incidence, prevalence and risk factors for peritoneal carcinomatosis (PC) from colorectal cancer. METHODS: Prospectively collected data were obtained from the Regional Quality Registry. The Cox proportional hazards regression model was used for multivariable analysis of clinicopathological factors to determine independent predictors of PC. RESULTS: All 11 124 patients with colorectal cancer in Stockholm County during 1995-2007 were included and followed until 2010. In total, 924 patients (8.3 per cent) had synchronous or metachronous PC. PC was the first and only localization of metastases in 535 patients (4.8 per cent). The prevalence of synchronous PC was 4.3 per cent (477 of 11 124). The cumulative incidence of metachronous PC was 4.2 per cent (447 of 10 646). Independent predictors for metachronous PC were colonic cancer (hazard ratio (HR) 1.77, 95 per cent confidence interval 1.31 to 2.39; P = 0.002 for right-sided colonic cancer), advanced tumour (T) status (HR 9.98, 3.10 to 32.11; P < 0.001 for T4), advanced node (N) status (HR 7.41, 4.78 to 11.51; P < 0.001 for N2 with fewer than 12 lymph nodes examined), emergency surgery (HR 2.11, 1.66 to 2.69; P < 0.001) and non-radical resection of the primary tumour (HR 2.75, 2.10 to 3.61; P < 0.001 for R2 resection). Patients aged > 70 years had a decreased risk of metachronous PC (HR 0.69, 0.55 to 0.87; P = 0.003). CONCLUSION: PC is common in patients with colorectal cancer and is associated with identifiable risk factors.

Increased risk of cancer among 3663 patients with cutaneous lupus erythematosus: a Swedish nationwide cohort study.

BACKGROUND: Other autoimmune diseases have been associated with higher risks for cancer, and numerous case reports of cutaneous lupus erythematosus (CLE) and different cancer types are available. OBJECTIVES: To estimate the overall and specific cancer risks in a nationwide cohort study of patients diagnosed with CLE in Sweden and compare that risk with that in a control cohort without CLE. METHODS: A cohort of 3663 individuals with CLE and a matched control cohort from the general population (three controls to each CLE case) without a diagnosis of CLE were derived from the Swedish National Patient Register, 1997-2007, and were electronically linked to the Swedish Cancer Register and the Swedish Cause of Death Register. Hazard ratios (HRs) and 95% confidence intervals (CIs) were calculated to compare the observed vs. the expected numbers of cancers. RESULTS: A total of 183 incident cancers occurred within the observation interval, yielding a HR of 1·8 (95% CI 1·5-2·2) for cancer overall. Median follow-up was 4·1 years. About a fourfold risk increase was seen for buccal cancer, lymphomas, respiratory cancer and nonmelanoma skin cancer. CONCLUSIONS: Patients with CLE appear to have an elevated risk for certain cancer types, an increase that remains when excluding patients also diagnosed with systemic lupus erythematosus. Our findings point to the importance of counselling about not smoking and sun avoidance, and underscore the need for specialized monitoring of this patient group along with bench-to-bedside research efforts to clarify pathogenesis.

Diverticular disease and the risk of colon cancer - a population-based case-control study.

BACKGROUND: Colon cancer and diverticular disease are most common in the Western world and their incidences tend to increase with advancing age. The association between the diseases remains unclear. AIM: To analyse the risk of colon cancer after hospitalisation for diverticular disease. METHODS: Nationwide case-control study. A total of 41,037 patients with colon cancer during 1992-2006, identified from the Swedish Cancer Register were included. Each case was matched with two control subjects. From the Swedish Inpatient Register, cases and control subjects hospitalised for diverticular disease were identified. Odds ratios (OR) and confidence intervals for receiving a diagnosis of colon cancer after hospital discharge for diverticular disease were calculated. Colon cancer mortality was compared between patients with or without diverticular disease. RESULTS: Within 6months after an admission due to diverticular disease, OR of having a colon cancer diagnosis were up to 31.49 (19.00-52.21). After 12 months, there was no increased risk. The number of discharges for diverticular disease did not affect the risk. Colon cancer mortality did not differ between patients with and without diverticular disease. CONCLUSIONS: Diverticular disease does not increase the risk of colon cancer in the long term, and a history of diverticular disease does not affect colon cancer mortality. The increased risk of colon cancer within the first 12months after diagnosing diverticular disease is most likely due to surveillance and misclassification. Examination of the colon should be recommended after a primary episode of symptomatic diverticular disease.

Rheumatoid arthritis and birth outcomes: a Danish and Swedish nationwide prevalence study.

OBJECTIVES: To examine the prevalence of preterm birth, infants with low Apgar score, small for gestational age (SGA) birth, stillbirth and congenital abnormalities in women with rheumatoid arthritis (RA) compared with women without RA. DESIGN: Prevalence study. SETTING: Combined Sweden and Denmark nationwide from 1994 to 2006. SUBJECTS: We included 871,579 women with a first-time singleton birth identified through population-based healthcare databases. MAIN OUTCOME MEASURES: We compared the prevalence of preterm birth, low Apgar score (<7 at 5 min), SGA birth, stillbirth and congenital abnormalities amongst women with RA compared with women without RA using prevalence odds ratio (OR) with 95% confidence interval (95% CI), whilst controlling for maternal age, smoking, parental cohabitation and year. We stratified analyses by period of birth (1994-1997, 1998-2001 and 2002-2006). RESULTS: Amongst 1199 women with RA, 7.8% gave birth between 32 and 36 gestational weeks (adjusted OR, 1.44; 95% CI, 1.14-1.82), 1.4% gave birth before gestational week 32 (adjusted OR, 1.55; 95% CI, 0.97-2.47), 1.6% had an infant with a low Apgar score (OR, 0.99; 95% CI, 0.95-1.65), 5.9% had an SGA birth (adjusted OR, 1.56; 95% CI, 1.2-2.01), 0.9% experienced stillbirth (adjusted OR, 2.07; 95% CI, 0.98-4.35) and 4.3% gave birth to an infant with congenital abnormalities (adjusted OR,1.32; 95% CI, 0.98-1.79). The OR for congenital abnormalities decreased from 2.57 (95% CI, 1.59-4.16) in 1994-1997 to 1.00 (95% CI, 0.64-1.56) in 2002-2006. CONCLUSIONS: Women with RA had a high prevalence of most adverse birth outcomes. This could be due to inflammatory activity, medical treatment or other factors not controlled for.

Health-related quality of life (EQ-5D) before and one year after surgery for lumbar spinal stenosis.

We investigated the pre-operative and one-year post-operative health-related quality of life (HRQoL) outcome by using a Euroqol (EQ-5D) questionnaire in 230 patients who underwent surgery for lumbar spinal stenosis. Data were obtained from the National Swedish Registry for operations on the lumbar spine between 2001 and 2002. We analysed the pre- and postoperative quality of life data, age, gender, smoking habits, pain and walking ability. The relative differences were compared to a Swedish EQ-5D population survey. The mean age of the patients was 66 years, and there were 123 females (53%). Before the operation 62 (27%) of the patients could walk more than 500 m. One year after the operation 150 (65%) were able to walk 500 m or more. The mean EQ-5D score improved from 0.36 to 0.64, and the HRQoL improved in 184 (80%) of the patients. However, they did not reach the level reported by a matched population sample (mean difference 0.18). Women had lower pre- and post-operative EQ-5D scores than men. Severe low back pain was a predictor for a poor outcome.

Gender differences in the treatment of rectal cancer: a population based study.

AIMS: Colorectal cancer is the second most common type of cancer in both women and men in Sweden. A National Quality Register for rectal adenocarcinoma in Sweden has included 97% of all rectal cancer patients since 1995. A previous study, based on data from the treatment program register in the Stockholm-Gotland region, found that women in Stockholm received preoperative radiotherapy (RT) less often than men [Martling A. Rectal cancer: staging, radiotherapy and surgery, ISBN: 91-7349-461-5. Stockholm: Karolinska Institute; 2003].(1) The aim of this study was to assess if women and men with rectal cancer receive equal treatment on a national level, and whether any potential dissimilarity causes measurable consequences in outcome, regarding postoperative morbidity and mortality, tumour recurrence and survival. METHODS: All patients with rectal cancer included in the National Quality Register between 1995 and 2002 (11,774 patients) were analysed. Gender was correlated to treatment, postoperative morbidity and mortality, local recurrence and death. RESULTS: The proportion of women selected for preoperative RT was significantly lower than that of men (42.5% vs. 50.1%, p<0.001). After adjustment for other prognostic factors, the significant difference in the treatment strategy among women and men persisted. Postoperative mortality was significantly higher in men than in women and the gender difference was most pronounced in irradiated patients. RT improved local control significantly in both women and men but it had no effect on cancer specific survival. CONCLUSIONS: For unknown reasons women less often received adjuvant RT than men. The opposite appeared to be a more adequate alternative. There is a need of improved selection criteria for RT in both men and women with rectal cancer.

Anti-tumour necrosis factor therapy in rheumatoid arthritis and risk of malignant lymphomas: relative risks and time trends in the Swedish Biologics Register.

BACKGROUND: Tumour necrosis factor (TNF) antagonists have proved effective as treatment against rheumatoid arthritis (RA), but the unresolved issue of whether the use of anti-TNF therapy increases the already elevated risk of lymphoma in RA remains a concern. METHODS: Using the Swedish Biologics Register (ARTIS), the Swedish Cancer Register, pre-existing RA cohorts and cross-linkage with other national health and census registers, a national RA cohort (n = 67,743) was assembled and patients who started anti-TNF therapy between 1998 and July 2006 (n = 6604) were identified. A general population comparator (n = 471,024) was also assembled and the incidence of lymphomas from 1999 to 31 December 2006 was assessed and compared in these individuals. RESULTS: Among the 6604 anti-TNF-treated RA patients, 26 malignant lymphomas were observed during 26,981 person-years of follow-up, which corresponded to a relative risk (RR) of 1.35 (95% CI 0.82 to 2.11) versus anti-TNF-naive RA patients (336 lymphomas during 365,026 person-years) and 2.72 (95% CI 1.82 to 4.08) versus the general population comparator (1568 lymphomas during 3,355,849 person-years). RA patients starting anti-TNF therapy in 1998-2001 accounted for the entire increase in lymphoma risk versus the two comparators. By contrast, RR did not vary significantly by time since start of first treatment or with the accumulated duration of treatment, nor with the type of anti-TNF agent. CONCLUSION: Overall and as used in routine care against RA, TNF antagonists are not associated with any major further increase in the already elevated lymphoma occurrence in RA. Changes in the selection of patients for treatment may influence the observed risk.

Different disease profiles for women and men with abdominal aortic aneurysms.

OBJECTIVE: The overall aim with this study was to investigate causes of death and mortality rates for women and men treated for abdominal aortic aneurysm (AAA) in Sweden. MATERIALS AND METHOD: All patients treated for ruptured and non-ruptured AAA 1987-2002 in Sweden were identified in national registries (n=12917). Age, sex, diagnosis, surgical procedure and mortality were analysed on a patient specific level. Logistic regression and analysis of standardised mortality rates (SMR) were performed. RESULTS: Post operative mortality was similar between the sexes. Age (p<0.0001), and surgery for rupture (p=0.0005), but not gender (p=0.65) were significant risk factor for poor long term survival. SMR revealed increased risk for both sexes compared to the population with significantly higher values for women than men (2.26, CI 2.10-2.43 vs. 1.63, CI 1.57-1.68, p<0.0001). The higher risk for women could be explained by the higher risk for aneurysm related death (ie.thoracic or abdominal aorta) compared to men (Hazard ratio 1.57 vs. 1.0, p<0.0001). CONCLUSION: Women do not have an increased surgical risk compared to men, but treated women have an increased risk of premature death compared to men and women in the population. They also have a higher risk for aneurysm related death compared to men with AAA.

Colon cancer management and outcome in relation to individual hospitals in a defined population.

BACKGROUND: The Stockholm and Gotland region in Sweden has a common management protocol for the treatment of colon cancer. The aim of this study was to assess the management and treatment of colon cancer in the region and to try to identify ways to improve the outcome further. METHODS: Clinical data on all patients diagnosed with colon cancer in the region's nine hospitals between January 1996 and December 2000 were prospectively collected. Patients were followed until December 2004, and their management and outcome analysed. RESULTS: Colon cancer was diagnosed in 2775 patients. An elective operation was performed in 2116 (76.3 per cent) patients and an emergency procedure in 590 (21.3 per cent). Emergency surgery was an independent risk factor for death. The crude overall cumulative 5-year survival was 46.2 per cent. A multivariable analysis of risk of dying and risk of local recurrence showed significant differences between hospitals. The number of lymph nodes examined in the specimens also differed between hospitals. CONCLUSION: Differences in the management and outcome of colon cancer in the nine hospitals, despite a common management protocol, indicate a need for improving collaboration between hospitals and multidisciplinary management.

Family history of breast cancer and young age at diagnosis of breast cancer increase risk of second primary malignancies in women: a population-based cohort study.

Among 152 600 breast cancer patients diagnosed during 1958-2000, there was a 22% increased risk of developing a second primary non-breast malignancy (standardised incidence ratio (SIR)=1.22; 95% confidence interval (CI): 1.19-1.24). The highest risk was seen for connective tissue cancer (SIR=1.78; 95% CI: 1.49-2.10). Increased risks were noted among women diagnosed with breast cancer before age 50. Oesophagus cancer and non-Hodgkin's lymphoma showed six- and four-fold higher risks, respectively, in women with a family history of breast cancer compared to those without in the > or =10-year follow-up period.