[On the differential diagnosis of shadows due to calcigerous soft tissue in the extremities (author's transl)].

We report a case of an unusual compact limy shading of the soft part in the lower leg, obviously caused by unphysique material the origin of which even retrospectively could not be clarified. Pathological compact limy shadings of the soft parts of the extremities are possible because of numerous reasons. Hereby the tissue calcination will be defined from the real ossifications and the direct exogene shades. Deficient knowledge of the pathophysiology often makes a preoperative difference very difficult with equivalent reoentgenological statements. The own difficulties in diagnosis of the case in question will be shown.