[A woman with balls in the lower abdomen].

A 34-year old woman visited the general practitioner because of nausea and diarrhoea. A large abdominal swelling was palpable. Ultrasound showed a cyst containing 'floating balls', pathognomic for a mature teratoma.

Cardiovascular risk in patients with new gout diagnosis: is monosodium urate volume at ankles and feet on dual-energy computed tomography associated with previous cardiovascular events?

Objectives: Chronic inflammation associated with hyperuricaemia and urate deposition may contribute to an increased risk of developing cardiovascular (CV) events (CVE) in patients with gout. The aim of this study was to explore whether urate deposition on dual-energy CT (DECT) present at the diagnosis of gout is associated with a history of CVE.

Methods: Patients from a study on clinical value of DECT with mono or oligoarthritis who had gout according the 2015 EULAR/ACR classification criteria were included in this cross-sectional study.

Cardiovascular risk in patients with new gout: should we reclassify the risk?

Objectives: Chronic inflammation, as seen in gout, may contribute to an increased risk of developing cardiovascular (CV) events (CVE). The aim of the study was to explore the effect of adding gout as a chronic inflammatory disease to the Dutch SCORE, a tool predicting 10-year CV mortality and morbidity.

Methods: This was a cross-sectional substudy including new patients with gout according the 2015 EULAR/ACR classification criteria who had participated in a trial on diagnostic accuracy of DECT with mono or oligoarthritis.

The performance of dual-energy CT in the classification criteria of gout: a prospective study in subjects with unclassified arthritis.

Objective: To establish the performance of (subsets of) the 2015 ACR/EULAR gout classification criteria in patients with unclassified arthritis, and to determine the value of dual-energy CT (DECT) herein. Reference was the MSU crystal detection result in SF at polarization microscopy.

Methods: We included subjects with acute, unclassified mono or oligoarthritis, who underwent SF analysis and DECT.

Benign Bone Conditions That May Be FDG-avid and Mimic Malignancy.

Positron emission tomography with the radiotracer F-fluoro-2-deoxy-d-glucose (FDG) plays an important role in the evaluation of bone pathology. However, FDG is not a cancer-specific agent, and knowledge of the differential diagnosis of benign FDG-avid bone alterations that may resemble malignancy is important for correct patient management, including the avoidance of unnecessary additional invasive tests such as bone biopsy. This review summarizes and illustrates the spectrum of benign bone conditions that may be FDG-avid and mimic malignancy, including osteomyelitis, bone lesions due to benign systemic diseases (Brown tumor, Erdheim-Chester disease, Gaucher disease, gout and other types of arthritis, Langerhans cell histiocytosis, and sarcoidosis), benign primary bone lesions (bone cysts, chondroblastoma, chondromyxoid fibroma, desmoplastic fibroma, enchondroma, giant cell tumor and granuloma, hemangioma, nonossifying fibroma, and osteoid osteoma and osteoblastoma), and a group of miscellaneous benign bone conditions (post bone marrow biopsy or harvest status, bone marrow hyperplasia, fibrous dysplasia, fractures, osteonecrosis, Paget disease of bone, particle disease, and Schmorl nodes).

Fabella Fractures after Total Knee Arthroplasty with Correction of Valgus Malalignment.

The incidence of fabella fractures is considered to be extremely low. This report presents two patients with femorotibial osteoarthritis and considerable preoperative valgus malalignment, who developed a fracture of the fabella (as demonstrated by radiography) after total knee arthroplasty with intraoperative correction of the valgus malalignment. Special attention should be paid to the fabella for not missing a fabella fracture in these patients.

Successful conservative management of symptomatic bilateral dorsal patellar defects presenting with cartilage involvement and bone marrow edema: MRI findings.

The dorsal patellar defect is a relatively rare entity that involves the superolateral quadrant of the patella. It is usually considered to represent a delayed ossification process, although its exact origin remains unclear. Because of its usually innocuous nature and clinical course, invasive interventions are generally deemed unnecessary, although curretage has been successfully performed on symptomatic cases.

A motive for the use of a posterior approach in shoulder arthography: ventral leakage of contrast medium.

Background: Some orthopedic surgeons request a posterior approach for shoulder magnetic resonance (MR) arthrography, especially in patients with anterior shoulder instability, to avoid interpretive difficulties in differentiating anterior extraarticular contrast injection when using an anterior approach from ventral leakage of contrast.

Purpose: To determine the occurrence of ventral leakage of contrast in shoulder MR arthrography when using a posterior approach.

Material And Methods: Retrospectively, we included 73 consecutive patients who underwent shoulder MR arthrography (1.