Abera MT, Dumessa KA, Robele TJ, Tefera TG, Woldeyohannes AM. Dot-in-circle sign in cervical actinomycotic mycetoma: An extremely rare case report.
Radiol Case Rep 2024;
19:2160-2167. [PMID:
38515773 PMCID:
PMC10950569 DOI:
10.1016/j.radcr.2024.02.078]
[Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/12/2024] [Accepted: 02/22/2024] [Indexed: 03/23/2024] Open
Abstract
Actinomycosis is an unusual, chronic granulomatous infection caused by Actinomycetes spp. The organism also causes mycetoma, a neglected tropical disease in endemic regions. We present a very uncommon case of extensive actinomycosis of the soft tissues in the neck with perivertebral extension that showed the dot-in-circle sign on magnetic resonance imaging. A 29-year-old male patient presented with progressively enlarging hard posterior neck swelling of 4 years duration. Subsequently, magnetic resonance imaging showed the dot-in-circle sign in an avidly enhancing infiltrative lesion with extensive involvement of the neck and perivertebral soft tissue. The pathologic examination was in line with actinomycosis. The patient responded to high doses of combination parenteral and oral antibiotics.
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