Overview
Benign nerve sheath tumors, including neurothekeomas, are slow-growing neoplasms originating from nerve sheath cells. They typically present as dermal or subcutaneous masses with varied histological features such as nests of cells in a myxoid background or whorls of spindle cells 12.Diagnosis
Clinical Presentation: Gradually enlarging, painless growths, often localized to the dermis or subcutaneous tissue 12.
Histological Features: Characterized by nests and cords of large cells with thin collagen bands in a myxoid stroma, positive S-100 protein staining 1.
Microscopic Appearance: Whorls of spindle-shaped cells with abundant myxoid cytoplasm and stroma noted in some cases 2.
Immunohistochemistry: S-100 protein positivity is a key diagnostic marker 1.Management
Surgical Excision: Primary treatment involves complete surgical removal to ensure local control and prevent recurrence 12.
Reconstruction: May be necessary post-excision, depending on the location and size of the tumor 12.
Adjuvant Therapy: Not typically required for benign nerve sheath tumors 12.Special Populations
Pediatrics: No specific considerations mentioned in the abstracts 12.
Elderly: No unique management challenges noted; standard surgical excision applies 12.
Comorbidities: No specific guidance provided regarding comorbidities; individualized surgical risk assessment recommended 12.Key Recommendations
Confirm diagnosis through histological examination with S-100 protein staining (Evidence: Moderate) 1.
Primary treatment should involve complete surgical excision (Evidence: Expert opinion) 12.
Reconstructive surgery may be necessary post-excision based on tumor location and size (Evidence: Expert opinion) 12.References
1 Donofrio V, Passeretti U, Russo S, Boscaino A, De Rosa G. Neurothekeoma of the thumb. A case report. Tumori 1988. link
2 Mason MR, Gnepp DR, Herbold DR. Nerve sheath myxoma (neurothekeoma): a case involving the lip. Oral surgery, oral medicine, and oral pathology 1986. link90043-5)