Hiremath Rudresh, Reddy Harish, Ibrahim Jebin, Haritha C H, Shah Rushit Sandeep
Professor, Department of Radiodiagnosis, K V G Medical College and Hospital, Sullia, Dakshina Kannada, Karnataka, India.
Senior Resident, Department of Radiodiagnosis, K V G Medical College and Hospital, Sullia, Dakshina Kannada, Karnataka, India.
J Clin Diagn Res. 2017 Jul;11(7):TC14-TC16. doi: 10.7860/JCDR/2017/26384.10269. Epub 2017 Jul 1.
Minor percentage of wooden foreign bodies is radio-opaque. High Resolution Ultrasonography (HRUSG) though existing is sparsely used as a primary imaging modality for diagnosis and localization of retained foreign body.
To evaluate the diagnostic accuracy of High Resolution Ultrasonography (HRUSG) in diagnoses and localization of retained foreign body.
A prospective study with registered 46 patients with history of foreign body injury which were initially imaged with conventional radiography was enrolled. Later patients were subjected for high resolution USG of the diseased part with a linear transducer. Surface marking was done for all subjects to assist the surgical exploration. Ultrasound findings were correlated with surgical exploration and histopathological findings.
Out of 46 patients, forty one showed foreign body with foreign body inflammatory reaction in the form of abscess and/or granulation tissue on high resolution ultrasonography. No foreign body was detected in five patients but they showed focal hypoechogenicity which represented abscess and/or haematoma. On surgical exploration, two out of 41 patients did not reveal foreign body where as rest were found to have foreign body with foreign body inflammatory reaction. Sensitivity and negative predictive value of the current study is 100%.
High resolution USG is not only an efficient modality in diagnosing and localizing the foreign body in soft tissue, but can also be utilized for guiding the foreign body removal.
一小部分木质异物是不透射线的。尽管已有高分辨率超声检查（HRUSG），但它作为诊断和定位残留异物的主要成像方式却很少被使用。
评估高分辨率超声检查（HRUSG）在诊断和定位残留异物方面的诊断准确性。
一项前瞻性研究纳入了46例有异物损伤史的患者，这些患者最初接受了传统X线摄影成像。随后，使用线性换能器对患者病变部位进行高分辨率超声检查。对所有受试者进行体表标记，以辅助手术探查。将超声检查结果与手术探查及组织病理学结果进行对比。
46例患者中，41例在高分辨率超声检查中显示有异物，并伴有异物炎症反应，表现为脓肿和/或肉芽组织。5例患者未检测到异物，但显示局部低回声，提示脓肿和/或血肿。手术探查时，41例患者中有2例未发现异物，其余患者均发现有异物及异物炎症反应。本研究的敏感性和阴性预测值均为100%。
高分辨率超声检查不仅是诊断和定位软组织中异物的有效方法，还可用于指导异物取出。
