Myositis ossificans is a pseudotumor that originates from skeletal muscle that may be clinically and histologically mistaken for a malignant soft tissue tumor. The correct diagnosis of myositis ossificans is important, as it can prevent unnecessary biopsies or surgery. This case report illustrates the imaging features of myositis ossificans on plain radiography, ultrasound (US), and magnetic resonance imaging (MRI). The subject of the case report is a 16-year-old female who presented to emergency department with 11 days of posterior right thigh pain with no known history of trauma. Physical examination revealed significant point tenderness in the right posterior thigh. Initial radiographs were normal. A targeted US demonstrated a mixed echogenicity lesion in the deep soft tissues of the posterior lateral right thigh. A follow up US, 2 weeks after the initial one, showed a lesion of mixed echogenicity with a central hypoechoic area encircled by a peripheral hyperechoic area. That peripheral hyperechoic area has some posterior acoustic shadowing suggesting calcifications. An MRI obtained approximately 1.5 months after the initial hospital visit demonstrated a well-defined lesion with heterogeneous T2 hyperintense and T1 intermediate signals along the short head of the right biceps femoris muscle. Mild heterogenous enhancement was seen of the mass and peripheral enhancement within the adjacent soft tissue. Radiographs obtained on the same day as the MRI showed a faintly ossified round mass in the posterior lateral soft tissues of the right thigh. A follow up radiograph obtained 4 months later demonstrated an interval decrease in size of the calcified mass, and the patient’s pain had improved by this time. Read More

Meeting name: SPR 2024 Annual Meeting & Postgraduate Course , 2024

Authors: Gumus Memduha, Lee Sean, Shah Amisha

Keywords: myositis ossificans

EOS^TM is a biplanar radiographic imaging system that can simultaneously acquire whole-body frontal and lateral standing radiographs with moving x-ray tubes and detectors. EOS has been shown to reduce radiation exposure and study time in comparison to standard digital radiography. While it has primarily found utility in evaluation of scoliosis, there has been limited study of EOS in performing pediatric skeletal surveys, which can be time-consuming and challenging given the age of the patient and the large number of images required. This study evaluates how implementing EOS in combination with digital radiography (DR) can reduce the number of images acquired and improve patient/family experience. Read More

Meeting name: SPR 2020 Annual Meeting & Postgraduate Course , 2020

Authors: Vasireddi Anil, Bradley Helen, Shah Amisha

Keywords: Skeletal Survey, EOS, Xray

To evaluate the effect of different levels of adaptive statistical iterative reconstruction (ASIR) in pediatric lower extremity CT scan to compare the radiation dose, objective imaging parameters and subjective diagnostic image quality ratings. Read More

Meeting name: IPR 2016 Conjoint Meeting & Exhibition , 2016

Authors: Shah Amisha, Rees Mitchell, Kar Erica, Bolton Kimberly, Panigrahy Ashok, Lee Vince

Keywords: ASIR, Radiation dose, CT scan, pediatric, extremity