Pathogenesis, Diagnosis, and Management of Inguinal Endometriosis: A Case Series of Six Patients.

Inguinal endometriosis is a less common form of endometriosis. Therefore, there is no consensus regarding its pathogenesis or treatment. In this study, we retrospectively reviewed the pathogenesis and treatment of six cases of inguinal endometriosis in our facility between 2009 and 2019.

Reevaluating hybrid neurofibroma/schwannoma: Predominance of schwannoma features despite CD34 positivity and initial neurofibroma diagnosis.

Schwannomas consist of both high-cellularity regions (Antoni A area) and hypocellular regions (Antoni B area) in histopathological findings. Neurofibromas characteristically consist of CD34 positive spindle cells with thin, wavy, nuclei and wavy collagen bands. Previous reports have described segments of schwannomas with neurofibroma features as hybrid tumors, although hybrid tumors were diagnosed based on partial CD34 positivity in many previous reports.