Discussion
Diagnosis With Brief Discussion
- Diagnosis
- Mucormycosis
- Radiologic Findings
- Chest PA shows a RUL mass with cavity.
Chest CT demonstrates mass with cavity and focal air-fluid level in right upper lobe. Some bubbly lucencies are seen in peripheral portion.
- Brief Review
- Wedge resection for the mass in right upper lobe was done and the pathology revealed non-segmented hyphae with right angle branching pattern, typical findings of mucormycosis.
Pulmonary mucormycosis is caused by fungi belonging to the Mucorales order. Mucormycosis occurs almost invariably in patients who are not fully immunocompetent. Patients with diabetes or a hematologic malignancy are particularly susceptible. Mucormycosis may present as in infection of the upper respiratory tract (particularly the sinuses) or the lungs.
The most common radiographic abnormality is progressive, homogenous, lobar or multilobar consolidation. Pathologically, consolidation presents confluent pneumonia or pulmonary infarction and hemorrhage from large vessel thrombosis. Occasionally there may be pleural effusions or hilar lymphadenopathy. Bronchial occlusion and pulmonary pseudoaneurysms are infrequent and are more likely to be appreciated on CT. Because of the angioinvasive nature of mucormycosis, the masslike lesions may show the ground-glass halo sign on CT, representing surrounding hemorrhage. Once infarction has occurred, cavitation of the necrotic lung ensues, with an air crescent within the consolidation.

- References
- 1. McAdams HP, Christenson MR, Strollo DC, Edward FP. Pulmonary mucormycosis: radiologic findings in 32 cases. AJR 1997;168:1541-1548.
2. Libshitz HI, Pagani JJ. Aspergillosis and Mucormycosis: Two types of opportunistic fungal pneumonia. Radiology 1981;140:301-306.
- Keywords
- lung, infection, fungal,