Gooding GA, Hardiman T, Sumers M, Stess R, Graf P, Grunfeld C. Detection of a 0.5-mm-thick thorn using ultrasound: a case report. (PMID: 11090409)įailla JM, van Holsbeeck M, Vanderschueren G. An illustrated tutorial of musculoskeletal sonography: part 4, musculoskeletal masses, sonographically guided interventions, and miscellaneous topics.
Lin J, Jacobson JA, Fessell DP, Weadock WJ, Hayes CW. Sonography and radiography of soft-tissue foreign bodies. Horton LK, Jacobson JA, Powell A, Fessell DP, Hayes CW. In a desert setting, this is a huge deal. As a result, very little of this water is lost to the atmosphere. The thin film of air reduces the rate of evaporation of water from the plant. US of soft-tissue foreign bodies and associated complications with surgical correlation. As mentioned above, thorns trap air around cacti that is pivotal in the survival of the plant two major ways. In our case, sonographic description of the location and characteristics of the foreign body was valuable by minimizing surgicalĮxploration, and a cactus thorn was surgically removed without complications.īoyse TD, Fessell DP, Jacobson JA, Lin J, van Holsbeeck MT, Hayes CW. For radiopaque foreign bodies, US can provide more precise localization and improved assessment of the surrounding soft-tissues, depicting fluidĬollections, tendon disorders, and injury to neurovascular structures. Sonography plays an important role for the detection of non-opaque foreign bodies, and has been shown to accuratelyĭemonstrate their size, shape, and location. Surfaces and those with a small radius of curvature produce clean shadowing. Smooth and flat surfaces produce dirty shadowing or reverberation artifact, whereas irregular Occurring deep to a foreign body depends primarily on its surface attributes rather than its composition. Sonographic artifacts also aid in identification. This rim of granulation tissue, edema, or hemorrhage, increases the conspicuity of foreign bodies on US. If they are present in the soft-tissues longer than about 24 hours, the ensuing inflammatory reaction can create a hypoechoic rim around theĮchogenic foreign body. All soft-tissueįoreign bodies are initially hyperechoic on sonography. Those invisible on conventional radiographs can often be easily identified on sonograms. Only 15% or less of wooden foreign bodies are detected with radiography. Detection is important because they may lead to serious infectious and inflammatoryĬomplications. Penetrating injuries and suspected retained foreign bodies are a common reason for emergency department visits.