Mycetoma

Thomas Hartman

Research output: Chapter in Book/Report/Conference proceedingChapter

Abstract

Imaging description A mycetoma (fungus ball) is typically caused by Aspergillus superinfection of a pre-existing cavity or cyst. The mycetoma itself is characterized by a mobile soft tissue mass within a thick-walled cyst or cavity [1–3] (Figure 25.1). There is usually thickening of the pleura adjacent to the cavity. Common “cavities/cysts” that can be affected include those secondary to old granulomatous infections (tuberculosis, fungal), sarcoidosis (Figure 25.2), honeycombing in interstitial lung disease (Figure 25.3), bulla, and bronchiectasis from any cause. As such, the imaging findings in the lungs adjacent to or remote from the mycetoma may be influenced by the underlying disease. Mycetomas are usually solitary, but can be multiple and can occur in any location in the lung where a cyst/cavity has formed. Importance On the chest radiograph, a mycetoma may appear as a soft tissue mass in the lung and may be concerning for malignancy. However, the CT findings are usually diagnostic for mycetoma. Mycetomas typically have associated abnormal vascularity (bronchial artery hypertrophy) supplying the lesion and as such are predisposed to hemorrhage which can be significant. Approximately 10% of mycetomas will resolve spontaneously [1].

Original languageEnglish (US)
Title of host publicationPearls and Pitfalls in Thoracic Imaging
Subtitle of host publicationVariants and Other Difficult Diagnoses
PublisherCambridge University Press
Pages66-67
Number of pages2
Volume9780521119078
ISBN (Electronic)9780511977701
ISBN (Print)9780521119078
DOIs
StatePublished - Jan 1 2011

ASJC Scopus subject areas

  • Medicine(all)

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    Hartman, T. (2011). Mycetoma. In Pearls and Pitfalls in Thoracic Imaging: Variants and Other Difficult Diagnoses (Vol. 9780521119078, pp. 66-67). Cambridge University Press. https://doi.org/10.1017/CBO9780511977701.026