Spontaneous Tumor Lysis Syndrome Secondary to Small-Cell Neuroendocrine Carcinoma of Unknown Origin: A Rare Case Report and Literature Review

Table 2

Cairo-Bishop definition of laboratory tumor lysis syndrome.

Variable	Value
Uric acid	≥8 mg/dL or 25% increase from baseline
Phosphorous	≥4.6 mg/dL or 25% increase from baseline
Potassium	≥6 mEq/L or 25% increase from baseline
Calcium	≤7 mg/dL or 25% decrease from baseline