‘Dot in circle sign’: a characteristic finding in ultrasound and MR imaging of soft tissue mycetomas
| Autor: | Sankar Neelakantan, Arul Arokia Sensan Babu, Rakesh Anandarajan |
|---|---|
| Rok vydání: | 2016 |
| Předmět: |
Adult
Male Dorsum 31-50 Years medicine.medical_specialty Antifungal Agents Asia Images In… Soft tissue swelling Radiography Inversion recovery Article 030218 nuclear medicine & medical imaging Diagnosis Differential Foot Diseases 030207 dermatology & venereal diseases 03 medical and health sciences 0302 clinical medicine Humans Medicine Ultrasonography business.industry Ultrasound Madurella Soft tissue Indian Sub-Continent General Medicine Anatomy Magnetic Resonance Imaging Mr imaging Mycetoma Radiology Itraconazole business |
| Zdroj: | BMJ Case Reports |
| ISSN: | 1757-790X |
| DOI: | 10.1136/bcr-2016-216502 |
| Popis: | A 36-year-old man presented with a history of painless swelling on his right distal foot progressively increasing in size since 2 years. Physical examination revealed a non-pulsatile, non-tender, firm swelling over the medial aspect of distal right foot. No discharging sinuses were noted. Plain radiograph showed normal underlying bones with soft tissue swelling of the medial aspect of the right distal foot (figure 1). Ultrasound examination showed multiple, conglomerate hypoechoic lesions with a hyperechoic centre with diffusely increased Doppler signal pick up within (figure 2). MRI revealed hypointense intralesional signals on T1-weighted images and hyperintense intralesional signals on T2-weighted and short tau inversion recovery (STIR) images, involving the subcutaneous and muscular planes of the dorsal and plantar aspects of the medial aspect of the right distal foot. Also noted were multiple, conglomerate, spherical T2 and STIR hyperintense intralesional foci, with hypointense rims, few of which also showed a central hypointensity (Dot in circle sign). The underlying bone appeared normal (figures 3 and 4). Figure 1 Plain radiograph of right foot showing soft tissue swelling with … |
| Databáze: | OpenAIRE |
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