BPOP in early childhood following resection of osteochondroma: report of a case.

The diagnosis of an osteochondroma in the short bones of the extremities is atypical and the presentation in infancy is unusual. A 3-month-old female presented for evaluation of radial deviation of the right index finger present since birth. Radiographs showed a broad-based osseous outgrowth with the usual features of an osteochondroma arising from the base of middle phalanx.

Histiocytic Sarcoma Arising From a Long Bone: Report of Two Cases.

Histiocytic sarcoma is a rare, but aggressive malignant neoplasm of monocyte/macrophage lineage with a wide age distribution. Bone involvement is exceedingly rarer compared to the lymph node, skin, and soft tissue, and no long bone involvement has been reported in the English literature. We here report 2 cases of histiocytic sarcoma involving the long bone: one from the femur of a 77-year-old female, status post the placement of an intramedullary nail for subtrochanteric hip fracture; the other from the radius of a 3-year-old female with no significant medical history.

A Comparative Study of High-Resolution Chemical-Shift-Eliminated Magnetic Resonance Imaging of Finger Specimens with Microcomputed Tomography.

Objective: High-resolution images of finger joints with chemical-shift elimination can be obtained using an interleaved water-fat (IWF) sequence. This study assessed IWF imaging of finger joints in the delineation of bone structures by comparing images of cadaver fingers with those of microcomputed tomography (CT) that served as a standard reference.

Materials And Methods: IWF images with spatial resolution of 176 µ × 176 µ × 300 µ were obtained from the distal and proximal interphalangeal joints of two cadaver finger specimens using a custom-built radiofrequency receive coil at 1.

Unexplained "massive osteolysis of femoral head" (MOFH) after acetabular fracture: occurrence and suggested patho-etiology.

Background We observed cases of extensive osteolysis of the femoral head following acetabular fractures even though the original fracture did not involve the femoral head or neck. This observation has been called massive osteolysis of the femoral head (MOFH). Purpose To evaluate the clinical and imaging features of MOFH to gain a better understanding of its patho-etiology.

Musculoskeletal imaging insight 2015: Kenya.

Over the past 6 years the International Skeletal Society (ISS) outreach programs have become popular amongst the various radiology organizations in sub-Saharan Africa. So much so that that the ISS outreach is now routinely expected to participate in many of the international radiology conferences in that part of the world. The organizational planning for an outreach visit to Kenya took place over a 3-year period.

Patients with rheumatoid arthritis in clinical remission manifest persistent joint inflammation on histology and imaging studies.

Objective: The purpose of our study was to test the hypothesis that synovitis on magnetic resonance imaging (MRI) and ultrasound (US) observed in patients with rheumatoid arthritis (RA) who meet remission criteria reflects active inflammation on histopathology.

Methods: We analyzed 15 synovial specimens obtained during surgical procedures from 14 patients with RA in clinical remission as defined by the American College of Rheumatology criteria. Histological specimens were scored for hyperplasia of synovial lining and synovial stroma, inflammation, lymphoid follicles, and vascularity.

International Skeletal Society outreach 2013: Rwanda.

It has been almost 20 years since the horrific events of the Rwandan genocide. Since that time, the country has made a remarkable recovery owing to good government and a great deal of aid. Health-care services are well organized, but remain short of resources and expertise.

Hip anatomic variants that may mimic pathologic entities on MRI: nonlabral variants.

Objective: The hip has several anatomic variants that may be mistaken for pathologic abnormalities. The radiologist needs to be able to distinguish these variants from true abnormalities. In this review, we present nonlabral variants of the hip that can be seen on MRI.

Hip anatomic variants that may mimic abnormalities at MRI: labral variants.

Objective: Normal anatomic variants of the acetabular labrum are observed on MR images and include labral variants, several sublabral sulci, and perilabral sulcus. Because variants can be misidentified as labral abnormalities such as labral tears, the radiologist needs to avoid the pitfall of mistaking variants as abnormalities.

Conclusion: The hip has multiple anatomic variants that can mimic abnormalities at hip MRI.

High-resolution interleaved water-fat MR imaging of finger joints with chemical-shift elimination.

Purpose: To study the use of an interleaved water-fat (IWF) sequence with a custom-made radiofrequency (RF) coil for high-resolution imaging of arthritic finger joints.

Materials And Methods: High-resolution finger magnetic resonance imaging (MRI) was performed using a custom-made dedicated RF receiver coil and an IWF sequence. A phantom, a cadaver finger specimen, and the fingers of two normal controls and six arthritic subjects were imaged with a resolution of 156 × 156 × 600 μm.

Diabetic myopathy: MRI patterns and current trends.

Objective: This study retrospectively evaluates diabetic myopathy in a large referral hospital population. It describes the MRI findings and the distribution of muscle involvement, including comparison with clinical parameters.

Materials And Methods: MRI reports of the lower extremities from July 1999 through January 2006 were reviewed and compared with clinical parameters for patients with diabetic myopathy.

High-resolution uniform MR imaging of finger joints using a dedicated RF coil at 3T.

Purpose: To develop a dedicated radiofrequency (RF) coil for high-resolution magnetic resonance imaging (MRI) of finger joints at 3T to improve diagnostic evaluation of arthritic diseases.

Materials And Methods: A dedicated cylindrical RF receive coil was developed for imaging finger joints at 3T. A planar coil, a saddle coil, and a 1.

Schatzker classification of tibial plateau fractures: use of CT and MR imaging improves assessment.

The Schatzker classification system for tibial plateau fractures is widely used by orthopedic surgeons to assess the initial injury, plan management, and predict prognosis. Many investigators have found that surgical plans based on plain radiographic findings were modified after preoperative computed tomography (CT) or magnetic resonance (MR) imaging. The Schatzker classification divides tibial plateau fractures into six types: lateral plateau fracture without depression (type I), lateral plateau fracture with depression (type II), compression fracture of the lateral (type IIIA) or central (type IIIB) plateau, medial plateau fracture (type IV), bicondylar plateau fracture (type V), and plateau fracture with diaphyseal discontinuity (type VI).

Pulmonary fat embolism after pelvic and long bone fractures in a trauma patient.

Fat embolism is a common complication of pelvic and long bone fractures. Macroscopic fat emboli in the pulmonary arteries on computed tomography have been reported postoperatively after fixation of long bone fractures for trauma, however the quantification of attenuation values of fat emboli have been infrequently reported in the literature. We present a case of pulmonary fat embolism in a 52-year-old female after acute bony trauma sustained during a motor vehicle accident.

Multimodality imaging in the diagnosis of deep vein thrombosis and popliteal pseudoaneurysm complicating a sessile osteochondroma.

Synergistic use of ultrasonography, radiography, multidetector CT (MDCT) and MRI enabled a prompt and accurate diagnosis of a nonocclusive popliteal vein thrombus (deep venous thrombosis, DVT) and a pseudoaneurysm complicating a sessile osteochondroma in an 11-year-old boy who presented in the emergency department with sudden-onset nontraumatic pain in the posterior aspect of the knee.

Calcaneal fractures: what the surgeon needs to know.

The calcaneus is an uncommonly fractured bone that plays a critical role in foot biomechanics, weight-bearing, and the ability to wear a shoe. The radiologist acts as a consultant during screening, operative planning, and follow-up imaging of these often complex injuries. Effective communication between radiologist and surgeon requires an understanding of calcaneal anatomy, goals of surgical reduction, and factors that affect patient management and outcomes.

Avulsions around the knee portend instability.

Bony avulsions about the knee are common injuries seen in the emergency room. Unawareness of characteristic radiographic patterns of injury that herald potential instability and require further workup can result in significant morbidity. We present a radiographic pictoral discussion on bony avulsions and associated soft tissue complex injuries on MRI.

Gout: a clinical and radiologic review.

Gout is a group of diseases characterized by arthritis and results from a disturbance of urate metabolism with the deposition of monosodium urate crystals in the joints and soft tissues. Often, but not invariably, the serum urate levels are elevated as a result of overproduction or underexcretion of uric acid. Clinical manifestations include acute and chronic arthritis, tophaceous deposits, interstitial renal disease, and uric acid nephrolithiasis.