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Dermatology1 paper

Primary leiomyosarcoma of face

Last edited: 4/10/2026

Overview

Primary leiomyosarcoma of the face is a rare malignancy originating from smooth muscle in the skin and soft tissues. While typically treated with wide local excision, Mohs micrographic surgery is emerging as a promising alternative for superficial variants.

Diagnosis

  • Diagnosis is based on histopathological examination of excised tissue.
  • Further research is needed to determine the value of Mohs micrographic surgery in treating superficial leiomyosarcoma, particularly the subcutaneous variant 1.

    • Management

  • Wide local excision is the standard of care for leiomyosarcoma 1.
  • Mohs micrographic surgery is a promising treatment option for superficial leiomyosarcoma, offering optimal margin control 1.
  • A systematic review of 14 studies including 66 patients treated with Mohs micrographic surgery demonstrated a low recurrence rate (1.5%) and no metastasis (0.0%) 1.
  • These findings contrast with higher recurrence and metastasis rates observed with wide local excision, though this may be influenced by a lower proportion of subcutaneous leiomyosarcomas in the reviewed cohort 1.

    • Key Recommendations

  • Mohs micrographic surgery is a promising treatment option for superficial leiomyosarcoma, demonstrating a low recurrence rate and no metastasis in a systematic review 1. (Evidence: Moderate)
  • Wide local excision remains the standard of care for leiomyosarcoma 1. (Evidence: Expert opinion)
  • Further research is warranted to determine the specific value of Mohs micrographic surgery in treating superficial leiomyosarcoma, especially the subcutaneous variant 1. (Evidence: Weak)

    • References

    1 Olsen EC, Svoboda SA. Mohs micrographic surgery for superficial leiomyosarcoma: a systematic review. Dermatology online journal 2024. link

    Original source

    1. [1]
      Mohs micrographic surgery for superficial leiomyosarcoma: a systematic review. — Olsen EC, Svoboda SA Dermatology online journal (2024)
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