![]() ![]() In comparison to patients over 40 years (age range of 41–78), osteochondromas were the most common comprising 21.1% of all benign tumors ( n = 4). In patients under the age of 40 years (7–40), aneurysmal bone cysts were the most common, comprising 21.1% of all cases ( n = 4). ![]() Other malignant tumors detected are summarized in Table 1.īenign tumors were detected in 23.2% of all cases ( n = 19). There were also three plasmacytoma cases identified two were in patients over the age of 40 years. Three of the Ewing’s sarcomas were found in patients over the age of 40 years. Other malignant tumors comprised four chondrosarcomas, four spindle cell sarcomas, and four Ewing’s sarcoma. Metastatic deposits formed the bulk of these cases ( n = 34). In this group, there was a male predominance of 1.4:1. Malignant tumors were the most common lesions identified comprising 62.7% of all cases ( n = 52). The mean age of our patients was 52 years (7–78 years) and there was a female predominance with a female-to-male ratio of 1.2:1. Of these, 82 cases (16.4%) were reported as isolated lesions predominantly involving the ischium. We identified 522 cases of lesions using the search criteria on our oncology (1989–2018) and radiology database. Age is an essential diagnostic tool in categorizing bone pathologies as many lesions are age specific. All ischial lesions identified in our cohort were subclassified into two groups according to age (<40 and more than 40 years of age). ![]() We reviewed the databases for demographics, diagnosis, and imaging features. Lesions which unambiguously arose in the ischium were included in the study. MATERIALS AND METHODSĪ retrospective search of our tertiary orthopedic oncology and radiology databases was performed to identify isolated lesions of the ischium over the past 30 years (1989–2018). This allows appropriate management to be instituted in a timely fashion, enabling lesion to be stratified into those that can be managed locally or referred to a specialist center. In this study, we review the patient demographics, imaging appearances, and pathological entities which arise in the ischium with the aim of facilitating a differential diagnosis. These lesions may develop in any part of the pelvis. The pelvis is a common site of origin of several primary and secondary musculoskeletal tumors as well as a range of other pathologies. We present the patient demographics, imaging appearances of pathological entities which arise in the ischium with the aim of facilitating a differential diagnosis. Metastasis was the most common malignant tumor in both cohorts (<40 years and over 40 years). The most common benign tumor was aneurysmal bone cyst in patients under 40 years and osteochondroma in patients over the age of 40 years. The search revealed 82 cases with primary involvement of ischium. Materials and Methods:Ī retrospective search of our oncology and radiology database was performed to identify primary ischial lesions. This allows appropriate management to be instigated in a timely fashion, enabling lesion to be stratified into those that can be managed locally or referred to a specialist center. ![]()
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