Intervention
Massive hemoptysis may complicate a mycetoma. Surgical resection of the cavity is the treatment of choice. Contraindications to surgery include bilateral advanced lung disease, large transpleural blood vessels, failure to identify the bleeding site, and continued hemoptysis after previous surgery. Bronchial artery embolization is a valuable technique in patients with persistent hemoptysis who are not surgical candidates.
Before bronchial artery embolization is attempted, angiography is performed to assess the bronchial arterial anatomy, nonbronchial systemic blood supply to the mycetoma, and presence and extent of any contribution of blood supply from the pulmonary artery (see Images 11 and 12). The technique involves selective bronchial artery catheterization with a femorovisceral 5-French end-hole catheter. After a preliminary bronchial angiogram study is performed, the catheter is securely inserted into the bronchial artery to be embolized. A coaxial catheter may be required for more selective and more distal placement.
Various embolic agents can be used; the simplest material is polyvinyl alcohol (PVA), a particulate agent that is available in a variety of sizes. Because mycetomas can derive their blood supply from the intercostal arteries, the thyrocervical trunks and pulmonary arteries may also need to be selectively embolized (see Images 13-18).
Percutaneous CT- or fluoroscopically guided intracavitary injection of a paste containing glycerin and amphotericin B or other fungal agents has been successful in the treatment of aspergillomas and chronic necrotizing aspergillosis. The fungal ball partially or completely resolved in 75% of patients. The intracavitary instillation of sodium or potassium iodide has also been used successfully in the treatment of hemoptysis in patients who are not surgical candidates.13
Medicolegal Pitfalls
- Chest pain may occur, particularly after embolization of an intercostal artery.
- Rarely, mild dysphagia may occur as a result of an interruption of blood supply to the mid esophagus. This dysphagia is self-limiting and resolves spontaneously.
- Transverse myelitis and bronchial necrosis are the most serious complications; fortunately, these are rare.
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Special Concerns
- Most case reports of transverse myelitis are historical and were most probably related to contrast agent toxicity.
- Bronchial necrosis is more frequently encountered when absolute alcohol is used for embolization.
- Nontarget embolization leading to infarction is also reported. This complication is less likely to occur when a superselective approach with an end-hole catheter is used.
The authors and editors of eMedicine gratefully acknowledge the contributions of previous coauthor Dr Hari Panigrahi to the development and writing of this article.
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Further Reading
Keywords
pulmonary aspergillosis, Aspergillus fumigatus, A fumigatus, allergic bronchopulmonary aspergillosis, ABPA, saprophytic aspergillosis, aspergilloma, chronic necrotizing aspergillosis, airway-invasive aspergillosis, semi-invasive aspergillosis, angioinvasive aspergillosis, finger-in-glove sign, tree-in-bud sign, air-crescent sign
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