Current Treatment Options for Cutaneous Adnexal Malignancies

Area of Science:

• Oncology
• Dermatology
• Surgical Pathology

Background:

• Cutaneous adnexal malignancies are rare tumors originating from skin appendages.
• These tumors differentiate into sweat gland, hair follicle, or sebaceous gland types.
• Established evidence-based treatment guidelines are lacking for these rare cancers.

Purpose of the Study:

• To review current understanding and treatment of cutaneous adnexal malignancies.
• To highlight challenges in surgical margin assessment and treatment selection.
• To explore emerging therapeutic strategies for unresectable cases.

Main Methods:

• Literature review of cutaneous adnexal malignancies.
• Analysis of treatment modalities including surgery, radiation, and chemotherapy.
• Discussion of prognostic factors and emerging targeted therapies.

Main Results:

• Surgery is the mainstay treatment, with Mohs micrographic surgery preferred for facial tumors due to superior margin control and cosmetic results.
• Radiation therapy is considered for unresectable tumors.
• Chemotherapy has limited evidence for metastatic disease, but targeted therapy and immunotherapy show future promise.

Conclusions:

• Optimal surgical margins for wide local excision remain unclear.
• Mohs micrographic surgery offers advantages for specific adnexal malignancies, particularly on the face, head, and neck.
• Future research into genetic mutations may lead to novel targeted and immunotherapies for advanced or unresectable cutaneous adnexal malignancies.