ABSTRACT
BACKGROUND: Swimming is a widespread sporting activity generally regarded as an ideal form of exercise, which has little or no impact on the knees. However, overuse or repetitive microtrauma injuries may often affect the knee joint of young competitive swimmers. These early lesions are frequently asymptomatic for a considerable period of time before causing discomfort or joint pain. PURPOSE: The aim of the present study is to use MRI to evaluate the knee joints of asymptomatic young elite swimmers and to compare them with age- and sex-matched controls who do not practice any impact sports regularly. STUDY DESIGN: Cross-sectional case-control study. MATERIAL AND METHODS: The authors performed a cross-sectional controlled study to evaluate 54 knees of 27 asymptomatic male adolescents aged 14-15 years, paired by age and weight. Participants were divided in two groups: 13 elite swimmers and 14 control adolescents. The authors performed all the exams using a 0.35-T open-field MRI unit and evaluated by two experienced radiologists blinded to study groups. The images were evaluated to detect the presence or absence of abnormalities. RESULTS: One or more imaging abnormalities were detected in 18 knees in the group of swimmers (69.2%; p=0.013). The most prevalent findings in the athletes were infrapatellar fat pad edema (53.8%; p=0.049), followed by bone marrow edema (26.9%; p=0.022), edema of prefemoral fat pad (19%; p=0.022) and joint effusion (15.3%; p=0.047). CONCLUSION: Significantly more MRI abnormalities were found in the knee joints of asymptomatic adolescent elite swimmers. This high prevalence of positive imaging findings in swimmers may correspond to benign changes or preclinical lesions, which should be evaluated in a follow-up study.
Subject(s)
Joint Diseases/pathology , Knee Joint/pathology , Swimming/physiology , Adolescent , Case-Control Studies , Cross-Sectional Studies , Humans , Incidental Findings , Knee Injuries/pathology , Magnetic Resonance Imaging , Male , Swimming/injuriesABSTRACT
O divertículo de Meckel é a anomalia congênita mais comum do trato gastrintestinal e a hemorragia é a complicação mais frequente. Cintilografia, ultrassonografia modo B e com Doppler, e tomografia computadorizada podem ser utilizadas para detectar complicações. Descrevemos dois casos de divertículo de Meckel complicado detectados à ultrassonografia, cujos achados foram diferentes dos descritos na literatura.
Meckel's diverticulum is the most common congenital anomaly of the gastrointestinal tract and bleeding is its most frequent complication. Scintigraphy, B-mode and Doppler ultrasonography, and computed tomography may be utilized to detect complications. The present report describes two cases of complicated Meckel's diverticulum detected at ultrasonography whose findings were different from those described in the literature.
Subject(s)
Humans , Male , Child, Preschool , Adolescent , Diverticulitis , Meckel Diverticulum , Diagnostic Imaging , Ultrasonography, Doppler, ColorABSTRACT
A literatura relata somente alguns casos de recém-nascidos com ascite urinária, geralmente secundária a ruptura de bexiga urinária e não de um cálice renal. Este relato de caso descreve um caso raro de ascite urinária em recém-nascido com válvula de uretra posterior que teve ruptura de um cálice renal, neste caso diagnosticada, até onde sabemos, pela primeira vez por ultrassonografia.
The literature reports only rare cases of urinary ascites, usually secondary to rupture of the bladder and not to renal calyx rupture. The present report describes an uncommon case of posterior urethral valve in a newborn with ascites caused by the rupture of a renal calyx that, to our knowledge, was diagnosed for the first time by ultrasonography.
