Paraneoplastic hypocalcemia in a patient whit gastric cancer accompanied by osteoblastic metastasis

Paraneoplastic syndromes are generally defined as clinical disorder associated with malignant diseases, and hypocalcemia as paraneoplastic manifestation associated with cancer is a rare condition. In patient with bone metastatic cancer, osteolytic lesions are more common than osteoblastic ones which give rise to hypercalcemia and hypocalcemia is a rare condition in this group of patients. We described a 56-year-old male with the history of gastric cancer and gastrectomy and chemotherapy since one year ego who came to clinic with complaints of nausea, vomiting and paresthesia of extremities which after diagnostic work up, paraneoplastic hypocalcemia was diagnosed. Hypocalcemia following bone metastasis is not a common phenomenon, but in patients with the history of gastric cancer and neurological symptoms (paresthesia, ...) evaluation of serum calcium value is recommended.