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- Presentation
Skin Infections and Systemic Malignancy
Description
The presentation focuses on skin infections in patients with systemic malignancies, highlighting risk factors like neutropenia and immune suppression due to treatments like chemotherapy. The speaker discusses common bacterial infections, primarily cellulitis caused by Group A Streptococcus and Staphylococcus aureus, and emphasizes empiric treatment regimens based on the patient's immune status. Viral infections such as HSV and VZV, as well as CMV associated mucocutaneous lesions, are also addressed, noting diagnostic methods and treatment options. Fungal infections, particularly candidiasis and invasive fungal diseases caused by organisms like Aspergillus and Mucor, are discussed in terms of their presentations and management. The importance of accurate diagnosis through biopsy and culture, including communication with laboratory personnel to avoid false negatives, is stressed. The talk concludes with considerations for less common conditions like Demodex folliculitis, which can mimic graft versus host disease in post-transplant patients. Overall, the discussion underscores the complex interplay between systemic malignancies, immune status, and the risk of skin infections, alongside the necessary diagnostic and therapeutic approaches.
View moreConclusions
- Patients with systemic malignancies are at increased risk for skin and soft tissue infections due to factors such as neutropenia and immune suppression.
- Common skin and soft tissue infections in cancer patients include cellulitis caused by Group A strep and S. aureus, which require careful empirical treatment.
- Nutritional status and history of chemotherapy or radiotherapy are critical in managing and diagnosing infections in immunocompromised patients.
- Empiric coverage for neutropenic patients should include antibiotics for both gram-positive and specific gram-negative organisms like Pseudomonas.
- Viral infections, particularly HSV and VZV, require a high index of suspicion and prompt testing in immunosuppressed individuals.
- Atypical mycobacterial infections in cancer patients necessitate specific diagnostic methods such as biopsy and specialized culture techniques.
- Angioinvasive fungal infections pose a severe risk in neutropenic patients and require immediate empirical antifungal therapy.
- Demodex folliculitis can mimic graft-versus-host disease but can be distinguished through clinical evaluation and biopsy.
- New rashes associated with human polyomavirus 7 in immunocompromised individuals present unique diagnostic challenges, evidenced by distinctive histopathological findings.
- Timely communication with microbiology labs regarding specimen handling is essential for accurate diagnosis of potential mucormycosis.
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