Secondary tumoral calcinosis | Figure 1

CincyKidsRad

Cincinnati Children's Radiology

Secondary tumoral calcinosis

AP radiograph of the pelvis (image 1) in an adolescent with renal failure shows an amorphous multilobulated calcific mass (arrow) adjacent to the left hip. Coronal T1-weighted (image 2), and T2 weighted (image 3) show the mass to be heterogeneous with areas of both low and high signal intensity. Tumoral calcinosis can occur as a primary condition or secondary to renal failure. This entity occurs in approximately 1% of patients with chronic renal failure. The hip is the most commonly affected site but calcification can deposited at other periarticular locations.

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AP radiograph of the right hip (image 1) shows an expansile lucent surface lesion (arrow) arising from the medial aspect of the proximal femur diaphysis. Axial (image 2) and coronal (image 3) T2 weighted MRI shows the mass (arrow) contains multiple small cystic spaces with fluid-fluid levels consistent with an aneurysmal bone cyst. Aneurysmal bone cysts are benign lesions. They typically occur in children and adolescents during the second decade of life. Patient's present with pain, swelling, or a palpable mass.