Kaposi sarcoma

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Background

  • A tumour associated with HHV-8
  • Closely associated with advanced HIV

ACTG Staging

  • Based on extent of tumour (T), immune status (I), and severity of systemic illness (S)
Criterion Lower Risk (0) Higher risk (1)
Tumour (T) Confined to skin and/or lymph nodes and/or minimal oral disease (non-nodular KS confined to palate) Tumor-associated edema or ulceration; extensive oral KS; gastrointestinal KS; or KS in other non-nodal viscera
Immune status (I) CD4 cell count >200/µL CD4 cell count <200/µL
Systemic illness (S) No history of OI or thrush; no "B" symptoms; and Karnofsky performance status >70 History of OI or thrush; "B" symptoms present; Karnofsky performance status <70; or other HIV-related illness (eg, neurologic disease, lymphoma)

Management

Local Treatments

  • Intralesional vinblastine 0.2 to 0.3 mg/mL solution with a volume of 0.1 mL per 0.5 cm2 of lesion
    • May be repeated at 3 to 4 weeks
  • Radiation therapy
  • Topical alitretinoin

Systemic Chemotherapy

  • Used in cases of advanced or rapidly-progressive disease
  • Indications include:
    • Widespread skin involvement (eg, more than 25 lesions)
    • Extensive cutaneous KS that is unresponsive to local treatment
    • Extensive edema
    • Symptomatic visceral involvement
    • Immune reconstitution inflammatory syndrome
    • Progression of KS on ART alone
  • Options include pegylated liposomal doxorubicin or liposomal daunorubicin, paclitaxel, bleomycin, vinblastine, vincristine, or etoposide
    • Pegylated liposomal doxorubicin 20 mg/m2 every three weeks