AVP and adrenal gland hyperfunction: Paraneoplastic syndromes' association with RCC is a relatively common advent in the diagnostic workup of this pathology, such as hypercalcemia, hypertension, hyperglycemia, hypercortisolism, hepatic dysfunction such as Stauffer syndrome, syndrome of inappropriate ADH production and galactorrhea, hematologic syndromes and neuromuscular disorders.7