Bentaleb Daoud, Mahdar Imane, Noureddine Leila, Mellouki Abdrrahmane, Sabiri Mouna, Lembarki Ghizlane, Essodegui Fatiha, Regragui Meriem
Central Service of Radiology, Ibn Rochd University Hospital, Faculty of Medicine and Pharmacy of Casablanca, Casablanca, 20100, Morocco.
Anatomopathology Service, Ibn Rochd University Hospital, Faculty of Medicine and Pharmacy of Casablanca, Casablanca, 20100, Morocco.
Radiol Case Rep. 2022 Mar 29;17(5):1817-1823. doi: 10.1016/j.radcr.2022.02.081. eCollection 2022 May.
Mycetomas caused by aerobic actinomycetes are called actinomycetomas. It is primarily localized in subcutaneous tissue but it can spread to different tissue planes including the skin, deep tissues and structures and eventually the bones. We report the cases of 2 patients referred for evaluation of soft tissue masses involving the foot. A 40-year-old male and a 25-year-old male, in both cases MRI was performed to assess the extension, which was later completed by a CT scan. MRI revealed a low intensity matrix that represents fibrosis containing multiple high intensity lesions corresponding to the mycetoma grains. Within some of the lesions a low-intensity focus was identified. This "dot-in-circle sign" on an MRI is a pathognomonic feature of mycetoma. The purpose of this work is to describe the characteristic MRI appearance of foot mycetoma.
由需氧放线菌引起的足菌肿称为放线菌性足菌肿。它主要局限于皮下组织，但可扩散至不同的组织层面，包括皮肤、深部组织和结构，最终累及骨骼。我们报告了2例因足部软组织肿块前来评估的患者病例。1例40岁男性和1例25岁男性，均行MRI检查以评估病变范围，随后进行CT扫描以完善检查。MRI显示低强度基质代表纤维化，其中包含多个与足菌肿颗粒相对应的高强度病变。在一些病变内发现了一个低强度灶。MRI上的这种“环内点征”是足菌肿的特征性表现。本文旨在描述足部足菌肿的特征性MRI表现。
