[Calcareous tendinitis--special forms of the upper extremities. Clinical aspects and differential diagnosis]

Calcifying tendinitis of the shoulder joint is a relatively common condition. Its pathogenesis is well documented in anatomical-pathological terms. The clinical observation of four unusual locations in the upper limb makes us to suspect the same pathological process as in the supraspinatus location. The clinical course of calcifying tendinitis in a typical location is discussed in detail.