Sequential therapy with 5-FU-ALA-PDT is more effective at AK clearance at 6 and 12 months compared to ALA-PDT monotherapy.

Netherton syndrome (NS) is a rare congenital ichthyosis that is characterized by impaired skin barrier function. Topical medications are cautiously used in NS since toxicity from systemic absorption is a major concern. Narrowband ultraviolet B phototherapy is an alternative therapeutic option that demonstrated its beneficial and practical use in a patient with NS.

Borderline sebaceous neoplasms are rare tumors that can be challenging to diagnose because of their admixture of histopathologic features. Most such tumors have been described in patients with Muir-Torre syndrome (MTS). We report the case of an immunosuppressed, 82-year-old African-American woman without MTS who developed a rapidly growing lesion on the left cheek. Histopathology revealed a borderline sebaceous neoplasm with predominant features of sebaceous adenoma and with focal features raising concern for the possibility of an evolving, well-differentiated, low-grade sebaceous carcinoma with a high mitotic index. In the setting of immunosuppression, borderline sebaceous neoplasms may occur outside of MTS; careful evaluation and conservative treatment are recommended in managing such tumors.

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