02748nas a2200229   4500000000100000008004100001260004400042653002100086100001400107700001500121700001200136700001300148700001400161700001700175700001500192700001300207700001200220245008000232856012100312520207100433022001402504       2023                            d  bSpringer Science and Business Media LLC10aGeneral Medicine1 aAntunes E1 aAraújo IM1 aCubal F1 aSousa JL1 aMartins S1 aGuimarães F1 aTenreiro R1 aGuerra M1 aCunha M00aLeprosy in a Patient With Lymphoma: A Challenge in the Twenty-First Century  uhttps://www.cureus.com/articles/206466-leprosy-in-a-patient-with-lymphoma-a-challenge-in-the-twenty-first-century#!/3 a<p>Leprosy, or Hansen’s disease, mistakenly considered a disease from the past by some, is still common nowadays, especially in tropical and subtropical regions. In the absence of appropriate medical treatment, it may progress and cause permanent damage to multiple organs.</p>

<p>This case report illustrates the diagnostic challenge of a south-american adult man who had been living in Europe for over 14 years. He was referred to the Hematology department due to persistent lymphocytosis and a CD5+ B-cell lymphoproliferative disorder was identified. During clinical surveillance, the patient developed skin lesions in his limbs with associated hypoesthesia. A histological diagnosis of lepromatous leprosy was made, and he underwent a long-term three-drug therapeutic regimen (dapsone, rifampicin, and clofazimine). Adding to the complexity of the case, the patient progressed with splenomegaly and constitutional symptoms, more than 7 years after development of lymphocytosis. Through a comprehensive evaluation, a definitive diagnosis of mantle cell lymphoma was established and received 6-cycle R-CHOP induction, followed by maintenance rituximab. Importantly, prophylaxis for leprosy reactivation was not administered as there were no recommendations in available guidelines. Eventually, the patient experienced a leprosy relapse while on maintenance therapy, 58 months after completing the initial anti-leprous treatment. Clinical response was attained with a new treatment regimen consisting of rifampicin, clofazimine, and minocycline.&nbsp;</p>

<p>Although leprosy is primarily observed in tropical and subtropical regions, the long incubation period of this disease combined with the global flow of migrants, made us consider it. Despite being rare, leprosy relapses can occur even after a few decades. The contribution of rituximab or previously administered chemotherapeutic agents is still unknown. The question remains whether antibiotic prophylaxis should be performed in patients undergoing immunochemotherapy for malignant diseases.</p>
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