In tumor lysis syndrome all of the following are seen except -
Tumor lysis syndrome

Caused by destruction of large number of rapidly proliferating neoplastic cells. It frequently leads to ARF
It is characterized by
Hypocalcemia 
Hyperkalemia   
Lactic acidosis   
Hyperuricemia
Hyperphosphatemia                           

Most frequently associated with treatment of

Burkitt lymphoma               
ALL          
CLL        
Solid tumors
Hypernatremia
Hypercalcemia
Hyperkalemia
Hyperphosphatemia