Abstract：
BACKGROUND:Infantile myofibromatosis is the most common fibrous tumor of infancy. It can involve the skin, muscle, bone, and viscera. This uncommon entity is subdivided into solitary and multicentric forms, with or without visceral involvement. OBJECTIVE:To describe the imaging characteristics of extracranial myofibromatosis. MATERIALS AND METHODS:Six infants, aged 1 day-1 week, were evaluated by imaging. All six patients had evaluation of one of the masses by US; four patients had CT evaluation of at least one of the masses; and five patients had evaluation by MRI. RESULTS:The US appearance of the myofibromas included a mass with a purely anechoic center with a thick wall, a mass with a partially anechoic center, and a mass without anechoic components. On enhanced CT, the masses had lower or similar attenuation compared to adjacent muscle, with some masses exhibiting peripheral enhancement. The MR appearance consisted of low signal on T1-weighted imaging. On T2-weighted imaging, two had low signal of the center and the other three had high signal. All masses showed peripheral enhancement after gadolinium administration. CONCLUSIONS:Myofibromas have variable appearance on US, with a mass with an anechoic center being the most common feature. On CT, the mass can exhibit peripheral enhancement, calcifications, and erosion of adjacent bone. The MR appearance consisted of low signal on T1-weighted imaging and high or low signal of the center on T2-weighted imaging. All masses showed peripheral enhancement after gadolinium administration.
journal_name
Pediatr Radioljournal_title
Pediatric radiologyauthors
Koujok K,Ruiz RE,Hernandez RJdoi
10.1007/s00247-004-1357-7keywords:
subject
Has Abstractpub_date
2005-04-01 00:00:00pages
374-80issue
4eissn
0301-0449issn
1432-1998journal_volume
35pub_type
杂志文章abstract：:In a period of 6 years 144 asymptomatic boys with cryptorchidism, of mean age 7 +/- SD 3.5 years, underwent orchiopexy. None of these boys referred to a history of a known urological anomaly, urinary tract infection, haematuria, palpable mass in the renal region, bladder extrophy, epispadias, hypospadias or anorectal ...
journal_title：Pediatric radiology
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journal_title：Pediatric radiology
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doi：10.1007/BF02386819
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journal_title：Pediatric radiology
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doi：10.1007/BF00975347
更新日期：1976-04-14 00:00:00
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journal_title：Pediatric radiology
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更新日期：2007-10-01 00:00:00
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journal_title：Pediatric radiology
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journal_title：Pediatric radiology
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journal_title：Pediatric radiology
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journal_title：Pediatric radiology
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journal_title：Pediatric radiology
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