ABSTRACT
Numerous forms of primary sarcoma can arise from the heart, pericardium, great vessels, lungs, chest wall, and breasts. Magnetic resonance imaging and computed tomography currently play important roles in determining the extent of primary thoracic sarcoma involvement, potential for resectability, and response to therapy. The purpose of this article is to review the various forms of primary sarcoma that may affect the thorax as well as illustrate pertinent cross-sectional radiologic findings with histopathologic correlation.
Subject(s)
Diagnostic Imaging/methods , Neoplasm Staging/methods , Sarcoma/diagnostic imaging , Sarcoma/pathology , Thoracic Neoplasms/diagnostic imaging , Thoracic Neoplasms/pathology , Adolescent , Adult , Biopsy, Needle , Breast Neoplasms/diagnostic imaging , Breast Neoplasms/pathology , Child , Female , Heart Neoplasms/diagnostic imaging , Heart Neoplasms/pathology , Humans , Immunohistochemistry , Lung Neoplasms/diagnostic imaging , Lung Neoplasms/pathology , Magnetic Resonance Imaging/methods , Male , Middle Aged , Pericardium/diagnostic imaging , Pericardium/pathology , Radiographic Image Enhancement , Radiology/methods , Sensitivity and Specificity , Thoracic Wall/diagnostic imaging , Tomography, X-Ray Computed/methods , Vascular Neoplasms/diagnostic imaging , Vascular Neoplasms/pathology , Young AdultABSTRACT
Clear cell sarcoma of tendons and aponeuroses (CCSTA) is a rare aggressive soft tissue tumor that frequently produces melanin. Its MR findings are rarely described in the literature. We report the case of a previously healthy 54-year-old man with clear cell sarcoma of the thigh who presented with a large painless mass of 1 year's duration. MR imaging showed the tumor to be of high signal intensity on fast spin-echo and STIR images. Both fine needle aspiration and excisional biopsy showed abundant melanin pigments. Histologic diagnosis was compatible with CCSTA.
Subject(s)
Magnetic Resonance Imaging , Melanoma , Sarcoma, Clear Cell , Soft Tissue Neoplasms , Tendons/diagnostic imaging , Tendons/pathology , Humans , Male , Melanoma/complications , Melanoma/diagnostic imaging , Melanoma/pathology , Middle Aged , Radiography , Sarcoma, Clear Cell/complications , Sarcoma, Clear Cell/diagnostic imaging , Sarcoma, Clear Cell/pathology , Soft Tissue Neoplasms/complications , Soft Tissue Neoplasms/diagnostic imaging , Soft Tissue Neoplasms/pathologyABSTRACT
Cystic lesions of the liver are a common finding and the differential diagnosis is wider than often considered. Awareness of the radiologic key features allows a correct presumptive diagnosis in a lot of cases. Diagnostic accuracy is increased when combining the characteristic radiologic features to the clinical history and laboratory findings as summarized in Table I. Further useful information can be obtained in the most difficult cases with atypical findings by means of fine needle aspiration performed under imaging guidance. In endemic regions, hepatic echinococcal cyst should be always kept in mind and excluded from the differential diagnosis of HCL.
