Melanocytic nevi are associated with neurofibromas in neurofibromatosis, type I, but not sporadic neurofibromas: a study of 226 cases.

Background: Neurofibromatosis, type 1, is associated with cutaneous melanin pigmentation, but an association with ordinary melanocytic nevi has not been described.

Methods: This retrospective case-control study was designed to see if neurofibromas in patients with neurofibromatosis, type 1 (NF-1) differ from sporadic neurofibromas (SN) in their incidence of associated melanocytic nevi and other histologic features. Slides from 114 NF-1 were compared with 112 SN and 300 intradermal melanocytic nevi (IDN).

The histologic spectrum of cutaneous sarcoidosis: a study of twenty-eight cases.

Background: Naked sarcoidal granulomas (NSGs) are the characteristic histologic finding in sarcoidosis. This descriptive study was designed to identify the frequency of other histologic changes in cutaneous sarcoidosis.

Methods: The slides from 28 sequential biopsies previously diagnosed as sarcoidosis in patients with known systemic sarcoidosis were reviewed.