Approximately 30,000 cases of non-Hodgkin lymphoma (NHL) occur in the equatorial belt of Africa each year. Apart from the fact that Burkitt lymphoma (BL) is very common among children and adolescents in Africa and that an epidemic of human immunodeficiency virus (HIV) infection is currently ongoing in this part of the world, very little is known about lymphomas in Africa. This review provides information regarding the current infrastructure for diagnostics in sub-Saharan Africa. The results on the diagnostic accuracy and on the distribution of different lymphoma subsets in sub-Saharan Africa were based on a review undertaken by a team of lymphoma experts on159 fine needle aspirationsamples and 467 histological samples during their visit to the African centres is presented. Among children (<18 years of age), BL accounted for 82% of all NHL, and among adults, diffuse large B-cell lymphoma accounted for 55% of all NHLs. Among adults, various lymphomas other than BL, including T-cell lymphomas, were encountered. The review also discusses the current strategies of the International Network of Cancer Treatment and Research on improving the diagnostic standards and management of lymphoma patients and in acquiring reliable clinical and pathology data in sub-Saharan Africa for fostering high-quality translational research.

Sporadic Burkitt lymphoma (sBL) can be delineated from diffuse large B-cell lymphoma (DLBCL) by a very homogeneous mRNA expression signature. However, it remained unclear whether all three BL variantsFsBL, endemic BL (eBL) and human immunodeficiency virus-associated BL (HIV-BL)F represent a uniform biological entity despite their differences in geographical occurrence, association with immunodeficiency and/or incidence of Epstein-Barr virus (EBV) infection. To address this issue, we generated micro RNA (miRNA) profiles from 18 eBL, 31 sBL and 15 HIV-BL cases. In addition, we analyzed the miRNA expression of 86 DLBCL to determine whether miRNA profiles recapitulate the molecular differences between BL and DLBCL evidenced by mRNA profiling. A signature of 38 miRNAs containing MYC regulated and nuclear factor-kB pathway-associated miRNAs was obtained that differentiated BL from DLBCL. The miRNA profiles of sBL and eBL displayed only six differentially expressed miRNAs, whereas HIV and EBV infection had no impact on the miRNA profile of BL. In conclusion, miRNA profiling confirms that BL and DLBCL represent distinct lymphoma categories and demonstrates that the three BL variants are representatives of the same biological entity with only marginal miRNA expression differences between eBL and sBL.

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Summary Distinguishing Burkitt lymphoma (BL) from B cell lymphoma, unclassifiable with features intermediate between diffuse large B‐cell lymphoma (DLBCL) and BL (DLBCL/BL), and DLBCL is challenging. We propose an immunohistochemistry and fluorescent in situ hybridization (FISH) based scoring system that is employed in three phases – Phase 1 (morphology with CD10 and BCL2 immunostains), Phase 2 (CD38, CD44 and Ki‐67 immunostains) and Phase 3 (FISH on paraffin sections for MYC, BCL2, BCL6 and immunoglobulin family genes). The system was evaluated on 252 aggressive B‐cell lymphomas from Europe and from sub‐Saharan Africa. Using the algorithm, we determined a specific diagnosis of BL or not‐BL in 82%, 92% and 95% cases at Phases 1, 2 and 3, respectively. In 3·4% cases, the algorithm was not completely applicable due to technical reasons. Overall, this approach led to a specific diagnosis of BL in 122 cases and to a specific diagnosis of either DLBCL or DLBCL/BL in 94% of cases that were not diagnosed as BL. We also evaluated the scoring system on 27 cases of BL confirmed on gene expression/microRNA expression profiling. Phase 1 of our scoring system led to a diagnosis of BL in 100% of these cases.

Problem Comprehensive service delivery models for providing post-rape care are largely from resource-rich countries and do not translate easily to resource-limited settings such as Kenya, despite an identified need and high rates of sexual violence and HIV. Approach Starting in 2002, we undertook to work through existing governmental structures to establish and sustain health sector services for survivors of sexual violence. Local setting In 2003 there was a lack of policy, coordination and service delivery mechanisms for post-rape care services in Kenya. Post-exposure prophylaxis against HIV infection was not offered. Relevant changes A standard of care and a simple post-rape care systems algorithm were designed. A counselling protocol was developed. Targeted training that was knowledge-, skills-and values-based was provided to clinicians, laboratory personnel and trauma counsellors. The standard of care included clinical evaluation and documentation, clinical management, counselling and referral mechanisms. Between early 2004 and the end of 2007, a total of 784 survivors were seen in the three centres at an average cost of US$ 27, with numbers increasing each year. Almost half (43%) of these were children less than 15 years of age. Lessons learned This paper describes how multisectoral teams at district level in Kenya agreed that they would provide post-exposure prophylaxis, physical examination, sexually transmitted infection and pregnancy prevention services. These services were provided at casualty departments as well as through voluntary HIV counselling and testing sites. The paper outlines which considerations they took into account, who accessed the services and how the lessons learned were translated into national policy and the scale-up of post-rape care services through the key involvement of the Division of Reproductive Health.Une traduction en français de ce résumé figure à la fin de l'article. Al final del artículo se facilita una traducción al español.