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Argon Beam Coagulator Electrode Tip Mimicking a Metallic Foreign Body

Gregory W. Gladish1, Joel S. Dunnington and Marvin H. Chasen

1 All authors: Department of Diagnostic Radiology, The University of Texas M. D. Anderson Cancer Center, 1515 Holcombe Blvd., Box 57, Houston, TX 77030.



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  		Fig. 1A. —18-year-old man with testicular carcinoma after right thoracotomy for resection of metastases. Posteroanterior (A) and lateral (B) conventional radiographs show metallic foreign body (arrows) in midline posterior to heart.

 


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  		Fig. 1B. —18-year-old man with testicular carcinoma after right thoracotomy for resection of metastases. Posteroanterior (A) and lateral (B) conventional radiographs show metallic foreign body (arrows) in midline posterior to heart.

 


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  		Fig. 1C. —18-year-old man with testicular carcinoma after right thoracotomy for resection of metastases. Close-up view on conventional radiograph shows characteristic needlelike configuration with slightly narrower shaft at base.

 


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  		Fig. 1D. —18-year-old man with testicular carcinoma after right thoracotomy for resection of metastases. CT scan shows foreign body (arrow) along medial pleural surface adjacent to esophagus and azygous vein.

 


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  		Fig. 2A. —36-year-old woman with acute leukemia after cholecystectomy for acalculous cholecystitis. Posteroanterior conventional radiograph shows foreign body with characteristic needlelike appearance of electrode tip (arrow) in right upper quadrant of abdomen.

 


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  		Fig. 2B. —36-year-old woman with acute leukemia after cholecystectomy for acalculous cholecystitis. CT scan shows metallic foreign body (arrow) between liver and right kidney.

 


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  		Fig. 3A. —52-year-old woman with abdominal sarcomatosis after resection of tumor implants. Posteroanterior conventional radiograph shows metallic foreign body (arrow) in right upper quadrant of abdomen. Note pneumoperitoneum (arrowheads) related to recent surgery.

 


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  		Fig. 3B. —52-year-old woman with abdominal sarcomatosis after resection of tumor implants. CT scan shows metallic foreign body (arrow) adjacent to posterior diaphragmatic surface of liver.

 


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  		Fig. 4A. —ABC Bend-A-Beam argon beam coagulator device (ConMed, Utica, NY). Photograph shows device with electrode tip (arrow) removed.

 


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  		Fig. 4B. —ABC Bend-A-Beam argon beam coagulator device (ConMed, Utica, NY). Conventional radiographs of intact (B) and fractured (C) tip of device show site of fracture (arrow, B) and appearance of needle fragment (C). Part of supporting sheath was removed during disassembly of device for radiography.

 


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  		Fig. 4C. —ABC Bend-A-Beam argon beam coagulator device (ConMed, Utica, NY). Conventional radiographs of intact (B) and fractured (C) tip of device show site of fracture (arrow, B) and appearance of needle fragment (C). Part of supporting sheath was removed during disassembly of device for radiography.

 


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  		Fig. 4D. —ABC Bend-A-Beam argon beam coagulator device (ConMed, Utica, NY). Photograph of electrode tip shows size of fragment and characteristic needlelike appearance with slightly narrower shaft at base.

 

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