Browsing by Author "Sandin, Sven"
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Item Agreement between Diagnoses of Childhood Lymphoma assigned in Uganda and by an International Reference Laboratory(Clinical epidemiology, 2012) Orem, Jackson; Sandin, Sven; Odida, Michael; Wabinga, Henry; Mbidde, Edward; Wabwire-Mangen, Fred; Meijer, Chris JLM; Middeldorp, Jaap M.; Weiderpass, ElisabeteCorrect diagnosis is key to appropriate treatment of cancer in children. However, diagnostic challenges are common in low-income and middle-income countries. The objective of the present study was to assess the agreement between a clinical diagnosis of childhood non- Hodgkin lymphoma (NHL) assigned in Uganda, a pathological diagnosis assigned in Uganda, and a pathological diagnosis assigned in The Netherlands. The study included children with suspected NHL referred to the Mulago National Referral Hospital, Kampala, Uganda, between 2004 and 2008. A clinical diagnosis was assigned at the Mulago National Referral Hospital, where tissue samples were also obtained. Hematoxylin and eosin-stained slides were used for histological diagnosis in Uganda, and were re-examined in a pathology laboratory in The Netherlands, where additional pathological, virological and serological testing was also carried out. Agreement between diagnostic sites was compared using kappa statistics.Item Evaluation of 'see-see and treat' strategy and role of HIV on cervical cancer prevention in Uganda(Reproductive Health, 2010) Mutyaba, Twaha; Mirembe, Florence; Sandin, Sven; Weiderpass, ElisabeteThere is scant information on whether Human Immunodeficiency Virus (HIV) seropositivity has an influence on the outcome of treatment of precancerous cervical lesions using cryotherapy. We studied the prevalence of cervical abnormalities detectable by visual inspection and cervical lesions diagnosed by colposcopy according to HIV serostatus and described the outcomes of cryotherapy treatment. Trained nurses examined women not previously screened for cervical cancer using visual inspection with acetic acid (VIA) and Lugol's iodine (VILI) in two family planning/post natal clinics in Kampala, Uganda, from February 2007 to August 2008. Women with abnormal visual inspection findings were referred for colposcopic evaluation and HIV testing. Women with precancerous cervical lesions detected at colposcopy were treated mainly by cryotherapy, and were evaluated for treatment outcome after 3 months by a second colposcopy.Item HPV types, HIV and invasive cervical carcinoma risk in Kampala, Uganda: a case-control study(Infectious Agents and Cancer, 2018) Odida, Michael; Sandin, Sven; Mirembe, Florence; Kleter, Bernhard; Quint, Wim; Weiderpass, ElisabeteWhile the association of human papillomavirus (HPV) with cervical cancer is well established, the influence of HIV on the risk of this disease in sub-Saharan Africa remains unclear. To assess the risk of invasive cervical carcinoma (ICC) associated with HIV and HPV types, a hospital-based case-control study was performed between September 2004 and December 2006 in Kampala, Uganda. Incident cases of histologically-confirmed ICC (N=316) and control women (N=314), who were visitors or care-takers of ICC cases in the hospital, were recruited. Blood samples were obtained for HIV serology and CD4 count, as well as cervical samples for HPV testing. HPV DNA detection and genotyping was performed using the SPF10/DEIA/LiPA25 technique which detects all mucosal HPV types by DEIA and identifies 25 HPV genotypes by LiPA version 1. Samples that tested positive but could not be genotyped were designated HPVX. Odds ratios (OR) and 95% confidence intervals (CI) were calculated by logistic regression, adjusting for possible confounding factors.Item Male partner involvement in reducing loss to follow-up after cervical cancer screening in Uganda(International Journal of Gynecology & Obstetrics, 2009) Mutyaba, Twaha; Mirembe, Florence; Sandin, Sven; Weiderpass, ElisabeteTo evaluate the efficacy of male partner involvement in reducing loss to follow-up among women in Uganda referred for colposcopy after a positive cervical cancer-screening test. Methods: In 2 familyplanning/ postnatal clinics at Mulago Hospital, Kampala, Uganda, 5094 women were screened for cervical lesions. Those who screened positive were referred for colposcopy; half were allocated to the intervention group and half to the control group. In the intervention group, information about the screening findings and a request to assist their partner in attending the next examination were sent to male partners. In the control group, a standard service was provided, which did not include a letter to the male partner. Logistic regression models were applied to calculate the probability of women returning for colposcopy. Results: Of the 834 women referred, 209 (25%) did not return for colposcopy: 143/419 (34%) from the control group and 66/415 (16%) from the intervention group. Women in the intervention group were more likely to return (odds ratio 2.8; 95% confidence interval, 1.9–3.9). Conclusion: Male partner involvement significantly reduced loss to follow-up among women referred for colposcopy.Item Type-specific incidence, clearance and predictors of cervical human papillomavirus infections (HPV) among young women: a prospective study in Uganda(Infectious Agents and Cancer, 2010-04-09) Banura, Cecily; Sandin, Sven; van Doorn, Leen-Jan; Quint, Wim,; Kleter, Bernhard; Wabwire-Mangen, Fred; K Mbidde, Edward; Weiderpass, ElisabeteWhile infections with human papillomavirus (HPV) are highly prevalent among sexually active young women in Uganda, information on incidence, clearance and their associated risk factors is sparse. To estimate the incidence, prevalence and determinants of HPV infections, we conducted a prospective follow-up study among 1,275 women aged 12-24 years at the time of recruitment. Women answered a questionnaire and underwent a pelvic examination at each visit to collect exfoliated cervical cells. The presence of 42 HPV types was evaluated in exfoliated cervical cells by a polymerase chain based (PCR) assay (SPF10-DEIA LiPA).