Surgical Management of Idiopathic Ulcerative Calcinosis Cutis in the Lower Extremity: A Case Report.

The purpose of this case study is to describe the surgical treatment of idiopathic ulcerative cutaneous calcinosis or calcinosis cutis of the lower extremity. A 77-year-old Latin American female who reported no significant past medical history presented to our hospital's emergency department from her home complaining of worsening right lower extremity erythema, edema, increased temperature, and pain. It was noted that the patient presented with multiple cutaneous calcified nodules to bilateral lower extremities, which she stated has been present for approximately 40 years. At the time of evaluation, 1 of the nodules on the lateral aspect of the right lower extremity ulcerated and became infected with unknown etiology, which lead to cellulitis of this limb. Radiographic imaging studies of the bilateral lower extremities showed extensive sheetlike soft tissue calcification overlying the middle to distal lower extremities. Serology reports showed the patient was positive for rheumatoid factor, antinuclear antibodies, SS-A/Ro antibody, and SS-B/La antibody. Because of the evidence of frank purulence and cellulitic changes to the infected nodule, the patient was taken to surgery the following day for sharp debridement and biopsy of the site. Postoperatively, there were minimal signs of improved healing to the wound base, although there was evidence of decreased erythema and edema to the extremity after the initial debridement and biopsy. Four days after the initial surgical invention, the patient was taken for a second operative procedure, which included a wide excisional biopsy with application of acellular dermal matrix and negative-pressure therapy. It was during this secondary debridement that further calcified deposits were encountered and specimens were submitted to pathology. Pathologic examination diagnosed the submitted specimen as cutaneous calcinosis. At this time, the patient is currently undergoing local wound care of the soft tissue deficient to her right lower extremity with the assistance of negative-pressure wound therapy with biweekly clinical follow-up.