Hemophilic pseudotumor in the bilateral forearms: a unique case report.

Hemophilic pseudotumor (HP) is a rarely encountered cystic mass that forms as a result of repeated bleeding from extra-articular soft tissues. HP cases have been previously documented in several locations in the body, most commonly in the femur and pelvis. To date, no upper extremity case involving the bilateral forearms has been reported.

Early-stage COVID-19 pandemic observations on pulmonary embolism using nationwide multi-institutional data harvesting.

We introduce a multi-institutional data harvesting (MIDH) method for longitudinal observation of medical imaging utilization and reporting. By tracking both large-scale utilization and clinical imaging results data, the MIDH approach is targeted at measuring surrogates for important disease-related observational quantities over time. To quantitatively investigate its clinical applicability, we performed a retrospective multi-institutional study encompassing 13 healthcare systems throughout the United States before and after the 2020 COVID-19 pandemic.

Association of tibialis posterior tendon pathology with other radiographic findings in the foot: a case-control study.

The purpose of this study was to analyze the prevalence of spring ligament pathology and other radiographic changes related to flatfoot deformity in the presence of different degrees of tibialis posterior tendon pathology. A total of 72 patients (24 with tibialis posterior tendon abnormality and 48 sex- and age-matched controls) were evaluated for tibialis posterior tendon pathology, spring ligament pathology, and plain pedal radiographic angles, including cuboid abduction, talar declination, calcaneal inclination, and Meary's angles. The patients with tibialis posterior tendon pathology were subdivided into either minor (Type I) or severe (Type II/III), according to the Conti classification of tibialis posterior tendon pathology on MRI.

Pellegrini-Stieda disease: a heterogeneous disorder not synonymous with ossification/calcification of the tibial collateral ligament-anatomic and imaging investigation.

Objective: Ossification/calcification around the medial femoral condyle has been known as Pellegrini-Stieda (PS) disease for almost 100 years. Little attention has been given to magnetic resonance (MR) imaging characteristics. Our purpose is to demonstrate the anatomy in the medial femoral compartment and imaging findings of PS disease, determining the sites and patterns of ossification.

Hydroxyapatite crystal deposition disease.

Hydroxyapatite (HA) crystal deposition disease (HADD) is a well-recognized systemic disease of unknown etiology that is caused by para-articular and/or intra-articular deposition of HA crystals. The disease is clinically manifested by localized pain, swelling, and tenderness about the affected joint along with variable limitation of joint motion, although not all patients are symptomatic. Plain radiographs may show calcifications of varying size and shape in the para-articular tendons, bursae, and capsule.