SMO and basal cell carcinoma: reported the same mosaic SMO mutation in a patient they considered to have segmental BCNS, as he fulfilled the diagnostic criteria, but whose features were interpreted by Happle and Tinschert as HTS, suggesting this is a variant of CJS.8, 9 This patient had linear skin‐coloured or pigmented lesions, comedones, pits, shortened digits and multiple basal cell carcinomas (BCCs).