Hyperphosphataemic tumoral calcinosis in Bedouin Arabs--clinical and radiological features.

In the first report of Bedouin Arabs with tumoral calcinosis, three Saudi Arabian male siblings and their female first cousin with the condition are described. In tumoral calcinosis the majority of cases are familial. These patients had associated hyperphosphataemia with normal renal function. The characteristic appearance of periarticular soft tissue calcified masses was present. Two of the cases developed calcific myelitis of long bones--a recognized complication of the disease. Two have widespread arterial calcification, which has not previously been described. Two cases have other unusual features; one has a calcified mass which has destroyed the blade of the scapula, whilst another developed a large tumoral mass on the posterior aspect of the knee.