Spontaneous tumor lysis syndrome is a rare clinical entity, which typically occurs in the context of rapidly proliferating hematologic malignancies. Tumor lysis syndrome in solid organ malignancies is even rarer, and typically provoked by cytotoxic treatment regimens. We describe a case of spontaneous tumor lysis of a solitary metastatic brain lesion from a nonseminomatous germ cell tumor. This case is unique in that spontaneous tumor lysis from a brain metastasis of a solid organ malignancy has never been reported, and spontaneous tumor lysis in a nonseminomatous germ cell tumor is exceedingly rare.
Case ReportA 31-year-old gentleman was admitted to our facility after developing status epilepticus and consequently, being involved in a MVA. Imaging revealed a 3.5cm right frontal brain lesion with surrounding edema, but no other acute intracranial pathology. The patient was intubated, sedated, and transferred to critical care for further treatment. His past medical history was notable for primary surgical resection of a T1N0M0 nonseminomatous germ cell tumor in March 2015, followed by detection of a 2.5cm lung nodule in September 2015, with concurrent beta-human chorionic gonadotropin (HCG) and alpha-fetoprotein (AFP) biochemical recurrence. He underwent 4 cycles of bleomycin, etoposide, and cisplatin (BEP).A head CT revealed a 4cm x 3.5cm right frontal lesion with surrounding edema (Figure 1).