Diagnosis of Fungal Infection in Neutropenic Patient
The patient presents with symptoms (fever, cough, chest pain, hemoptysis) and specific CT findings (nodular infiltrates, halo sign, crescent sign) indicative of an invasive fungal infection, most likely Invasive Pulmonary Aspergillosis (IPA).
This is common in patients with neutropenia, often resulting from chemotherapy.
- Neutropenia: Low white blood cell count, increasing susceptibility to infections.
- CT Findings: The halo sign (a central nodule or mass surrounded by ground-glass opacity) and the crescent sign (a radiolucent area between the nodule and the surrounding consolidation) are characteristic radiological features suggesting IPA.
Treatment Options Analysis
The choice of treatment depends on identifying the causative agent. Given the presentation, a fungal infection is suspected.
- Colistin: An antibiotic effective against certain Gram-negative bacteria, not fungi.
- Granulocyte Macrophage Colony (Stimulating Factor): This is a supportive therapy to increase white blood cell counts, not a direct treatment for infection.
- Voriconazole: A broad-spectrum triazole antifungal agent. It is the first-line treatment for invasive aspergillosis.
- Piperacillin-tazobactam: A combination antibiotic used for bacterial infections.
Conclusion: Most Useful Drug
Based on the high suspicion of Invasive Pulmonary Aspergillosis in an immunocompromised patient with characteristic radiological signs, Voriconazole is the most appropriate and useful drug for treatment.
Important Questions from Fungal Infections
- Which of the following opportunistic systemic mycoses is characterized by rapid development of severe tissue necrosis and emerged as specific complication associated with COVID-19 infection in India?
- Which of the following fungal infections is caused by dermal inoculation of the fungal agent, usually from a thorn?
Consider the following statements with regard to coccidioidomycosis:
1. It is a primary systemic mycosis caused by dimorphic fungi Cocci- dioides immitis and Coccidioides posadasii.
2. Primary pulmonary coccidioido- mycosis presents with cough, fever, chest pain and arthritis.
3. Progressive pulmonary coccidioido- mycosis presents with constitu- tional symptoms like fever, weight loss, anorexia and features of lobar pneumonia.
4. Coccidioides meningitis is a mild disease, not warranting any treatment.
Which of the statements given above are correct?
- Consider the following statements with regard to Amphotericin B :
1. It is a narrow spectrum antifungal agent.
2. It can cause nephrotoxicity.
3. It lacks an oral preparation.
4. Its lipid formulations are less toxic.
Select the correct answer using the code given below: - Which one of the following moulds causes mucormycosis, commonly known as 'black fungus'?
