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Chronic papular onchodermatitis

Last edited: 4/22/2026

Overview

Chronic papular onchodermatitis, often referred to as acroangiodermatitis, is a vascular disorder characterized by skin lesions resembling Kaposi sarcoma, typically localized to the lower extremities. It arises from abnormal blood vessel formation and can occur in various clinical contexts, including congenital arteriovenous malformations 1.

Diagnosis

  • Clinical Presentation: Papular skin lesions, often on lower extremities, mimicking Kaposi sarcoma 23.
  • Histological Features: Resemblance to Kaposi sarcoma histologically 23.
  • Differential Diagnosis: Distinguishing from true Kaposi sarcoma and other vascular anomalies is crucial 4.
  • Diagnostic Imaging: Radionuclide scanning (e.g., Tc 99m pertechnetate) may show false-positive results; useful for assessing underlying vascular anomalies 4.
  • Management

  • First-Line Treatments:
  • - Dapsone: Effective in some cases, often combined with supportive measures 3. - Supportive Care: Leg elevation and compression stockings 3.
  • Adjunctive Treatments:
  • - Skin Grafting and Radiotherapy: Historically used but not specific to acroangiodermatitis; caution advised due to potential misdiagnosis 2.

    Special Populations

  • Pediatrics: Can present in congenital forms associated with arteriovenous malformations 1.
  • Comorbidities: Venous insufficiency and arteriovenous malformations should be ruled out, though not always present 2.
  • Key Recommendations

  • Consider Dapsone for Treatment: Use dapsone in combination with supportive measures like leg elevation and compression stockings for managing acroangiodermatitis 3 (Evidence: Moderate).
  • Avoid Unnecessary Aggressive Treatments: Avoid skin grafting and radiotherapy unless definitive diagnosis excludes acroangiodermatitis 2 (Evidence: Weak).
  • Utilize Radionuclide Scans Cautiously: Employ radionuclide scans cautiously for diagnosis, recognizing potential false-positives; focus on assessing underlying vascular anomalies 4 (Evidence: Moderate).
  • References

    1 Zutt M, Emmert S, Moussa I, Haas E, Mitteldorf C, Bertsch HP et al.. Acroangiodermatitis Mali resulting from arteriovenous malformation: report of a case of Stewart-Bluefarb syndrome. Clinical and experimental dermatology 2008. link 2 Hung NA, Strack M, Van Rij A, North CJ, Blennerhassett JB. Spontaneous acroangiodermatitis in a young woman. Dermatology online journal 2004. link 3 Rashkovsky I, Gilead L, Schamroth J, Leibovici V. Acro-angiodermatitis: review of the literature and report of a case. Acta dermato-venereologica 1995. link 4 Rosen T, Martin S, Stern JK. Radionuclide scanning in pseudo-Kaposi's sarcoma. Archives of dermatology 1979. link

    Original source

    1. [1]
      Acroangiodermatitis Mali resulting from arteriovenous malformation: report of a case of Stewart-Bluefarb syndrome.Zutt M, Emmert S, Moussa I, Haas E, Mitteldorf C, Bertsch HP et al. Clinical and experimental dermatology (2008)
    2. [2]
      Spontaneous acroangiodermatitis in a young woman.Hung NA, Strack M, Van Rij A, North CJ, Blennerhassett JB Dermatology online journal (2004)
    3. [3]
      Acro-angiodermatitis: review of the literature and report of a case.Rashkovsky I, Gilead L, Schamroth J, Leibovici V Acta dermato-venereologica (1995)
    4. [4]
      Radionuclide scanning in pseudo-Kaposi's sarcoma.Rosen T, Martin S, Stern JK Archives of dermatology (1979)

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