Concurrent acute spontaneous tumor lysis syndrome complicated with multiple organ failure in a patient with pre-existing undiagnosed lung cancer.

Acute kidney injury, a common complication associated with malignancy, occurs in various clinical situations for numerous reasons. Acute tumor lysis syndrome (TLS) is possibly the most significant cause of acute kidney injury in cancer patients, because it is fulminant at onset and associated with severe metabolic derangements. Acute spontaneous tumor lysis syndrome is rare and most of the related malignancies belong to hematologic malignancies but it has seldom been investigated as bulky or advanced metastatic non-hematologic malignancies. TLS comprises a clinical laboratory derangement of cellular metabolism which can lead to acute renal impairments, cardiac arrhythmia, seizures and patient demise. Prevention and treatment of tumor lysis syndrome depends on early recognition of at-risk patients, volume repletion and xanthin oxidase inhibitors. In addition, in patients with high risk tumor types, prophylactic use of rasburicase before chemotherapy is required. If dialysis is required, continuous modalities may be favored, particularly in patients with more severe TLS. This case report discusses a 79-year-old man with controlled Alzheimer's disease presented with picture of septic shock and multiorgan dysfunction (acute kidney injury, acute lung injury, acute brain injury) pulmonary suppuration in the right lung field due to aspiration pneumonia with infection-induced systemic inflammatory response (SIRS) was diagnosed. Further work-up revealed lung cancer on chest CT scan. Antibiotic, respirator and hemodialysis treatment improved his condition but died several days later. Acute spontaneous TLS may present in association with infectious SIRS and multiple organ failure, the combination of which results in significant mortality.