Fracture Due to Hypercalcemia of Benignancy From a Parotid Tumour.

Pseudo-arthrosis of the proximal humerus is an uncommon condition that is difficult to treat. Humoral hypercalcemia from a benign tumour is a rare clinical entity and pleomorphic adenoma as its source has never been reported in the literature. We present the case of a 53-year-old gentleman with a pleomorphic parotid gland adenoma and pseudoarthrosis non-union of the proximal humerus exacerbated by symptomatic parathormone-independent hypercalcemia. The non-union is fixed using a novel technique of placing an ipsilateral cortico-cancellous iliac strut graft as a medial buttress and stabilized with a fixed-angle plate over the lateral side. Following the surgical resection of the tumour, hypercalcemia resolved and the patient improved clinically. This case is a good example of a rare endocrine disease managed by a multidisciplinary approach.