Nodular primary localized cutaneous amyloidosis after trauma: a case report and discussion of the rate of progression to systemic amyloidosis.

Nodular primary localized cutaneous amyloidosis (NPLCA) has been associated with progression to systemic amyloidosis. The reported estimate of 50% progression to systemic amyloidosis has come under scrutiny as recent studies have suggested a significantly lower rate. Still, it is essential to consider systemic amyloidosis after making the diagnosis of NPLCA and to follow up patients longitudinally for possible progression to systemic disease. We present a case of a 24-year-old woman with NPLCA with onset after traumatic injury, review the literature, and discuss the proposed rate of progression of NPLCA to systemic amyloidosis.