Tumor lysis syndrome (TLS) in patients with solid tumors is a rare and potentially fatal condition associated with anti-cancer treatment. Its outcome depends on awareness, identification of high-risk patients, and implementation of appropriate preventive measures. A systematic review was conducted according to PRISMA guidelines of case reports describing the occurrence of TLS in patients with solid tumors, primarily to identify potentially unrecognized or unusual clinical findings and outcomes. We searched the PubMed, EMBASE, and Cochrane databases and conference abstracts and performed manual searches for case reports and case series published in English and describing patients who developed TLS.A total of 124 studies (118 case reports and six case series) describing the findings for 132 patients were included. The most common cancers were hepatocellular carcinoma (17%, n = 22), lung cancer (13%, n = 17), and melanoma (10%, n = 13). The most common risk factor was metastatic disease (75%, n = 100). TLS was induced by chemotherapy in 48% (n = 64) of the patients. Clinical manifestations of TLS developed within three days of anti-cancer treatment in 37% of the patients (n = 49), while 52% (n = 68) received the full dose of anti-cancer treatment. Gastrointestinal symptoms occurred in 33% of the patients (n = 44), hyperuricemia in 95% (n = 125), and elevated creatinine level occurred in 85% of the patients (n = 112), While 58% (n = 77) of the patients received intravenous fluids, only 49% received allopurinol, and 24% (n = 32) received rasburicase. A total of 101 patients (77%) were treated in the ward, and 54% (n = 71) died. The mortality rate associated with TLS in patients with solid tumors remains high. Adequate management requires awareness, early recognition, and identification of patients at high risk. Interdisciplinary team management is essential to reduce mortality.
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