Imaging features of gluteal in vitro fertilization injection granulomas, with delayed clinical presentation simulating soft tissue sarcoma.

Objectives: To review the clinical and imaging findings of patients with remote history of intramuscular (IM) in vitro fertilization (IVF) gluteal injections, presenting with signs and symptoms of a possible gluteal soft tissue sarcoma.

Methods And Methods: Retrospective review of consecutive patients with a history of prior IVF therapy referred for MRI evaluation of a gluteal soft tissue mass was performed. Six patients were reviewed, with 5 patients meeting study inclusion criteria.

Trunnionosis: the latest culprit in adverse reactions to metal debris following hip arthroplasty.

The imaging findings of periprosthetic soft tissue lesions (pseudotumours) have been typically defined in the context of newer second-generation metal-on-metal hip arthroplasty. More recently, similar findings have been described in the setting of non-metal-on-metal prostheses. Although uncommon, wear and corrosion between the metal surfaces at the head-neck ('trunnionosis') and neck-stem interfaces are the potential culprits.

Magnetic resonance imaging features of osseous manifestations of early acquired syphilis.

We report the case of a 64-year-old man who initially presented with a maculopapular rash followed several weeks later by bilateral shin pain and infiltrative cutaneous lesions over the lower legs. The plain radiographs were not contributory, and the patient was referred for a whole-body bone scan, which demonstrated multifocal osseous lesions, including such lesions in the lower legs, skull and facial bones. Magnetic resonance imaging (MRI) demonstrated numerous small tibial and fibular nodular lesions involving the medullary cavity and the cortex.

Clinical and radiographic response to a local infliximab injection in a patient with chronic sacroiliitis.

Background: A 49-year-old man presented to a rheumatology clinic with a 2-month history of low back pain. The pain seemed to be inflammatory in origin, with nocturnal occurrence and substantial early morning stiffness. The patient was previously well, with no history of psoriasis, inflammatory bowel disease or iritis.

Recurrent symptoms after shoulder instability repair: direct MR arthrographic assessment--correlation with second-look surgical evaluation.

Purpose: To retrospectively determine the accuracy of direct magnetic resonance (MR) arthrography of the shoulder in patients with recurrent or residual signs and/or symptoms of instability after prior instability repair, with surgical findings as the reference standard.

Materials And Methods: After institutional ethics review board approval was obtained and informed consent was waived, 40 patients (31 men, eight women; mean age, 28 years) with recurrent instability after previous instability repair who underwent direct shoulder MR arthrography before repeat surgery were studied. Two musculoskeletal radiologists reviewed direct MR arthrographic studies by using consensus agreement in a blinded fashion.

MR imaging findings of anterior interosseous nerve lesions.

Objective: To study and characterise the MR imaging findings of lesions of the anterior interosseous nerve (AIN).

Materials And Methods: Magnetic resonance imaging (MRI) findings of the forearm of ten patients referred to our institution with suspected AIN lesions were retrospectively studied. Five healthy volunteers with normal forearm MRI findings formed a control group.

Scoring sacroiliac joints by magnetic resonance imaging. A multiple-reader reliability experiment.

Magnetic resonance imaging (MRI) of the sacroiliac (SI) joints and the spine is increasingly important in the assessment of inflammatory activity and structural damage in clinical trials with patients with ankylosing spondylitis (AS). We investigated inter-reader reliability and sensitivity to change of several scoring systems to assess disease activity and change in disease activity in patients with AS. Twenty sets of consecutive MRI, derived from a randomized clinical trial comparing an active drug with placebo and selected on the basis of the presence of activity at baseline, were presented electronically to 7 experienced readers from different countries (Europe, Canada).

Magnetic resonance imaging of the shoulder in asymptomatic professional baseball pitchers.

The purpose of this study was to evaluate the magnetic resonance imaging findings in both shoulders of asymptomatic professional baseball pitchers. Fourteen pitchers who were without significant prior injury underwent a blinded clinical assessment and magnetic resonance imaging of both shoulders. All images were interpreted by two experienced musculoskeletal radiologists.