“…1, 2, 3, 4) [2,3]. Usually, OO are classified by their location as subperiosteal, cortical, endosteal, and medullary [15,16]. Furthermore, tumors of the proximal femur may be classified also as intra-articular or extra-articular [17].…”
Osteoid osteoma (OO) is a benign bone tumor whose main radiological finding is nidus. OO of the proximal femur can also result in non-specific findings such as hip joint effusion, perinidal bone marrow edema and soft tissue mass. Since the nidus may be difficult to identify with MR, these non-specific findings can lead to erroneous diagnosis. Therefore, MR imaging technique should be optimized in order to identify nidus. Since MR imaging has assumed increasing importance in the evaluation of disorders of the hip, radiologists must be aware of the spectrum of findings of OO of the proximal femur. The aim of this pictorial review is to show the MR imaging findings of intra-articular and extra-articular OO of the proximal femur.
“…1, 2, 3, 4) [2,3]. Usually, OO are classified by their location as subperiosteal, cortical, endosteal, and medullary [15,16]. Furthermore, tumors of the proximal femur may be classified also as intra-articular or extra-articular [17].…”
Osteoid osteoma (OO) is a benign bone tumor whose main radiological finding is nidus. OO of the proximal femur can also result in non-specific findings such as hip joint effusion, perinidal bone marrow edema and soft tissue mass. Since the nidus may be difficult to identify with MR, these non-specific findings can lead to erroneous diagnosis. Therefore, MR imaging technique should be optimized in order to identify nidus. Since MR imaging has assumed increasing importance in the evaluation of disorders of the hip, radiologists must be aware of the spectrum of findings of OO of the proximal femur. The aim of this pictorial review is to show the MR imaging findings of intra-articular and extra-articular OO of the proximal femur.
“…Subperiosteal lesions are extremely rare in the hand, with only limited reported cases (Crosby and Murphy 1988;Kayser et al 1998;Shankman et al 1997). The typical radiographic appearance is that of a small, radiolucent lesion or nidus surrounded by an area of bone sclerosis (Fig.…”
“…Lesions occurring in the subperiosteum are rarer than those seen in the more conventional cortical location. Subperiosteal lesions are extremely rare in the hands with only a few reported cases [27][28][29].…”
Surface lesions involving the bones of the hand are uncommon. This pictorial review illustrates the spectrum of conditions including benign primary bone tumours, malignant primary bone tumours and non-neoplastic disorders. The review focuses on the radiographic appearances of these lesions and other techniques such as CT and MR imaging that may suggest a specific diagnosis.
scite is a Brooklyn-based organization that helps researchers better discover and understand research articles through Smart Citations–citations that display the context of the citation and describe whether the article provides supporting or contrasting evidence. scite is used by students and researchers from around the world and is funded in part by the National Science Foundation and the National Institute on Drug Abuse of the National Institutes of Health.