Telangiectasias and flow cytometry. (A) Telangiectasias are most prominent on the face and the trunk and rarely seen on the lower extremities. (B) Extended phenotyping of bone marrow plasma cells from 3 patients (designated A, B, C) with TEMPI syndrome has been performed by flow cytometry using a panel of markers including: CD38, CD138, CD19, CD27, CD56, and CD81. The loss of CD19 appears to be a consistent feature of the monoclonal plasma cell population.