Abstract:
OBJECTIVE:The objective of this study was to describe a variety of non-neoplastic causes of high-signal-intensity areas seen on T2-weighted magnetic resonance (MR) images obtained after treatment for malignant musculoskeletal neoplasm. DESIGN:MR examinations obtained after treatment for malignant musculoskeletal neoplasm in 11 patients were reviewed. The examinations of these patients were selected because at least one MR study of each patient showed high-signal-intensity areas on T2-weighted images at or near the site of the original tumor. The MR imaging findings were correlated with results of biopsy in four patients, and with information from follow-up radiologic examinations and the patients' medical records in all cases, to determine the cause of the high-signal-intensity areas. RESULTS:Non-neoplastic entities responsible for high-signal-intensity areas included postsurgical seroma, hematoma, postradiation therapy changes, fat necrosis and seroma, surgical hemostatic packing material, intercalary bone allograft, strut bone graft, atrophic muscle, and herniated colon and bladder. Knowledge of details of the surgical procedure and the time interval since surgery or irradiation aided in accurate interpretation of the findings, but did not allow immediate biopsy to be deferred in every case. CONCLUSION:High-signal-intensity areas on T2-weighted images in patients previously treated for malignant musculoskeletal neoplasm may represent a variety of entities other than residual or recurrent neoplasm, even in the presence of a mass. The MR imaging findings should be interpreted in conjunction with details of the specific clinical circumstances to prevent misdiagnosis and unnecessary biopsy.
journal_name
Skeletal Radioljournal_title
Skeletal radiologyauthors
Panicek DM,Schwartz LH,Heelan RT,Caravelli JFdoi
10.1007/BF00228920subject
Has Abstractpub_date
1995-04-01 00:00:00pages
185-90issue
3eissn
0364-2348issn
1432-2161journal_volume
24pub_type
杂志文章abstract::Subchondral signal abnormalities are often present on magnetic resonance (MR) images of patients with osteoarthritis, but no study correlating these changes with histopathology has been published. We selected nine consecutive patients with clinical and radiographic diagnosis of moderate to severe osteoarthritis of the...
journal_title:Skeletal radiology
pub_type: 杂志文章
doi:10.1007/BF00204605
更新日期:1994-08-01 00:00:00
abstract::The clinical, radiological and pathological features of a case of lipofibromatosis, a rare paediatric soft tissue neoplasm, are described. The tumour involved the foot of a male infant and was present at birth. Magnetic resonance imaging showed a lipomatous mass, with splaying of muscles of the sole by lobules of fat....
journal_title:Skeletal radiology
pub_type: 杂志文章
doi:10.1007/s00256-008-0458-z
更新日期:2008-06-01 00:00:00
abstract::A case of Petriellidium boydii (synonym: Allescheria boydii) infection of the knee joint is described. It followed a penetrating soft tissue injury with a pitchfork. Such infections are rare in this country and bone involvement has not been recorded previously except in maduramycosis contracted in tropical areas. ...
journal_title:Skeletal radiology
pub_type: 杂志文章
doi:10.1007/BF00360494
更新日期:1982-01-01 00:00:00
abstract::A skeletal seeking radiopharmaceutical labeled with a long-lived radionuclide was developed to evaluate regional bone formation and its subsequent resorption. The agent is [phosphonate (phenylmethylene hydroxy) bis] - I-125 or I-125 phi PA. Tissue distribution studies in mice (N = 16) showed approximately 40% of the a...
journal_title:Skeletal radiology
pub_type: 杂志文章
doi:10.1007/BF00361978
更新日期:1982-01-01 00:00:00
abstract::Myoepitheliomas (MEs) are uncommon tumours of the soft tissue with an intermediate biological behaviour and uncertain differentiation. Primary intra-osseous MEs are rare and occur predominantly in the axial and proximal appendicular skeleton in middle-aged patients. The morphological variation of the tumour cells and ...
journal_title:Skeletal radiology
pub_type: 杂志文章
doi:10.1007/s00256-016-2452-1
更新日期:2016-10-01 00:00:00
abstract::The cervical spine is the second most common location for manifestation of rheumatoid arthritis (RA). Symptoms are typically related to involvement of the craniocervical junction. Unfortunately, conventional radiographic examination is often unable to demonstrate that RA is the cause of such symptoms. Magnetic resonan...
journal_title:Skeletal radiology
pub_type: 杂志文章
doi:10.1007/BF00193087
更新日期:1990-01-01 00:00:00
abstract::We report the case of an 11-year-old boy who came to our observation with localized pain in the left arm for nearly 5 months. No previous history of trauma was referred in an otherwise healthy patient. Radiographs, isotope bone-scan, computed tomography, and magnetic resonance imaging of the lesion involving the left ...
journal_title:Skeletal radiology
pub_type: 杂志文章,评审
doi:10.1007/s00256-014-2039-7
更新日期:2015-05-01 00:00:00
abstract::With the growing number of orthopedic reconstructive spinal procedures, the use of bone grafting has steadily increased in the past decade. An understanding of the biology of bone grafting is essential for both the clinician and radiologist. Despite the advent of computed tomography and magnetic resonance imaging, con...
journal_title:Skeletal radiology
pub_type: 杂志文章
doi:10.1007/BF00241813
更新日期:1992-01-01 00:00:00
abstract:OBJECTIVE:This study observed the distribution of CT attenuation values for T10-L3 vertebral bodies and derived the Hounsfield unit (HU) thresholds using the quantitative computed tomography (QCT) as a reference to predict osteoporosis and normal bone density. METHODS:We included 482 subjects who were scheduled to und...
journal_title:Skeletal radiology
pub_type: 杂志文章
doi:10.1007/s00256-020-03573-y
更新日期:2021-02-01 00:00:00
abstract::A case of sclerosing epithelioid fibrosarcoma and its appearance on MRI is presented. The tumor showed a zonal architecture on MRI with a large central core of very low signal intensity and a peripheral rim of intermediate to high signal intensity on T1- and T2-weighted spin echo pulse sequences. The core showed decre...
journal_title:Skeletal radiology
pub_type: 杂志文章
doi:10.1007/s002560050297
更新日期:1997-10-01 00:00:00
abstract::The biceps brachii myotendinous unit is a common source of shoulder, arm, and elbow pain. Its complex anatomy can present a challenge when interpreting MR images. We discuss the clinical and imaging presentations of injury related to the proximal biceps brachii separately in another manuscript. The purpose of this man...
journal_title:Skeletal radiology
pub_type: 杂志文章,评审
doi:10.1007/s00256-020-03501-0
更新日期:2020-11-01 00:00:00
abstract::While well-recognized in the orthopedic literature as a cause of chronic hip pain, acetabular retroversion has not been specifically described in the radiologic literature. Acetabular retroversion represents a particular form of hip dysplasia characterized by abnormal posterolateral orientation of the acetabulum. This...
journal_title:Skeletal radiology
pub_type: 杂志文章
doi:10.1007/s00256-006-0150-0
更新日期:2007-06-01 00:00:00
abstract::CT-guided percutaneous needle biopsy of the spine is a well-described technique for determining the nature of indeterminate vertebral lesions or establishing a diagnosis of spinal infection, the high diagnostic accuracy and the safety of the procedure having been extensively documented. The purpose of the current arti...
journal_title:Skeletal radiology
pub_type: 杂志文章,评审
doi:10.1007/s00256-020-03584-9
更新日期:2021-02-01 00:00:00
abstract::We examined seven ankles with an accessory soleus muscle to determine if the magnetic resonance (MR) imaging features were sufficient to allow accurate diagnosis of this anomalous muscle. We believe that the diagnosis of an accessory soleus muscle is unequivocal with MR imaging on the basis of morphology and signal in...
journal_title:Skeletal radiology
pub_type: 杂志文章,评审
doi:10.1007/BF00223083
更新日期:1994-10-01 00:00:00
abstract:OBJECTIVE:To report the application of dynamic contrast-enhanced subtraction MRI for detecting recurrences in aggressive or malignant soft tissue tumors. DESIGN:The imaging studies consisted of static (T1- and T2-weighted spin-echo) acquisitions, followed by dynamic conventional spin-echo short TR/TE images (at 45 s, ...
journal_title:Skeletal radiology
pub_type: 杂志文章
doi:10.1007/s002560050428
更新日期:1998-09-01 00:00:00
abstract::Extramedullary plasmacytomas are rare neoplasms arising from proliferations of monoclonal plasma cells. In primary form, these malignancies occur without other sites of plasma cell disease. Secondary extramedullary plasmacytomas occur in association with multiple myeloma and may be discovered during initial intramedul...
journal_title:Skeletal radiology
pub_type: 杂志文章
doi:10.1007/s00256-020-03514-9
更新日期:2020-12-01 00:00:00
abstract::We report on a rare case of an intraosseous hemangioma involving the proximal tibia in a 70-year-old man. Radiographically, the lesion was a well-defined osteolytic lesion with marginal sclerosis. The CT images demonstrated a well-defined osteolytic lesion with partial cortical breakthrough. T1-weighted MR images show...
journal_title:Skeletal radiology
pub_type: 杂志文章
doi:10.1007/s002560000256
更新日期:2000-09-01 00:00:00
abstract::A case of an intraarticular epithelioid sarcoma is presented. The patient was a 35 year old man who presented with a 10 months history of a chronic monoarthritis. The MRI showed a diffuse lesion involving the synovial membrane of the knee. There was a marked increased signal on T2 weighted images. Most epithelioid sar...
journal_title:Skeletal radiology
pub_type: 杂志文章
doi:10.1007/s002560050417
更新日期:1998-08-01 00:00:00
abstract::A wide variety of infections can affect the chest wall including pyogenic, tuberculous, fungal, and some other unusual infections. These potentially life-threatening disorders are frequent especially among immunocompromised patients but often misdiagnosed by physical examination and radiographs. The purpose of this ar...
journal_title:Skeletal radiology
pub_type: 杂志文章,评审
doi:10.1007/s00256-008-0636-z
更新日期:2009-12-01 00:00:00
abstract::A case of aneurysmal bone cyst of the patella in a 15-year-old woman was presented. An ABC occurring in a female patient is rare, and to our knowledge this is the first report in the literature. All other reports of patellar ABCs reported have occurred in young black men [2, 3]. The radiographic findings and clinical ...
journal_title:Skeletal radiology
pub_type: 杂志文章
doi:10.1007/BF02580394
更新日期:1994-11-01 00:00:00
abstract:PURPOSE:To prospectively compare the diagnostic accuracy of diffusion-weighted whole body imaging with background whole body signal suppression (DWIBS) with skeletal scintigraphy for the diagnosis and differentiation of skeletal lesions in patients suffering from prostate or breast cancer. MATERIAL AND METHODS:A diagn...
journal_title:Skeletal radiology
pub_type: 杂志文章
doi:10.1007/s00256-009-0789-4
更新日期:2010-04-01 00:00:00
abstract::Two cases of a rare Anderson type III occipital condyle fracture are presented. In any patient sustaining craniovertebral injury an occipital condyle fracture may be missed because plain films can be unremarkable. It is important to include computed tomography or coronal hypocycloidal tomography for all suspect cases ...
journal_title:Skeletal radiology
pub_type: 杂志文章
doi:10.1007/BF00197672
更新日期:1993-01-01 00:00:00
abstract:BACKGROUND:Preoperative diffusion-weighted MRI (DW-MRI) has been described as an efficient method to differentiate good and poor responders to chemotherapy in osteosarcoma patients. A DW-MRI performed earlier during treatment could be helpful in monitoring chemotherapy. OBJECTIVE:To assess the accuracy of DW-MRI in ev...
journal_title:Skeletal radiology
pub_type: 临床试验,杂志文章
doi:10.1007/s00256-012-1360-2
更新日期:2012-09-01 00:00:00
abstract::We evaluated the relative contribution of plain radiographs and computed tomography to the assessment of fracture healing under experimental circumstances. In 15 sheep, we performed midshaft femoral osteotomies and internal fixation of the resultant segmental fractures. Radiographs were obtained preoperatively and imm...
journal_title:Skeletal radiology
pub_type: 杂志文章
doi:10.1007/BF00355070
更新日期:1986-01-01 00:00:00
abstract::Patients with adult spinal deformity (ASD) are surgically treated for pain relief; however, visualization of the exact origin of the pain with imaging modalities is still challenging. We report the first case of a 60-year-old female patient who presented with painful degenerative kyphoscoliosis and was evaluated with ...
journal_title:Skeletal radiology
pub_type: 杂志文章
doi:10.1007/s00256-016-2464-x
更新日期:2016-11-01 00:00:00
abstract::Two patients with osteosarcoma of a lower limb and presumed lymph node metastases are described. The metastases presented in both children as palpable masses, one in the inguinal region and the other in the pelvis. One was visible on plain radiography; both were demonstrated on computed tomography and bone scintigraph...
journal_title:Skeletal radiology
pub_type: 杂志文章
doi:10.1007/BF00361209
更新日期:1989-01-01 00:00:00
abstract::Lipoblastoma in the prepatellar region was observed in a 7-month-old girl. The diffuse (lipoblastomatosis) and circumscribed forms have different radiological appearances. Lobular proliferation of fatty tissue with fibrous septae is characteristic of the circumscribed form. ...
journal_title:Skeletal radiology
pub_type: 杂志文章
doi:10.1007/BF02341676
更新日期:1991-01-01 00:00:00
abstract:OBJECTIVE:A bone infarct may occasionally dedifferentiate to osteogenic sarcoma, fibrosarcoma or malignant fibrous histiocytoma. However, the association of an angiosarcoma with a bone infarct is extremely rare. Such an association is presented in three patients. Their clinical course is compared with that of patients ...
journal_title:Skeletal radiology
pub_type: 杂志文章,评审
doi:10.1007/s002560050435
更新日期:1998-10-01 00:00:00
abstract:OBJECTIVE:Accurate insertion of a guidewire under image intensifier guidance is a fundamental skill required by orthopaedic surgeons. This study investigated how image intensifier distortion, which is composed of pin-cushion and sigmoidal components, changed the apparent trajectory of a guidewire, and the resulting dev...
journal_title:Skeletal radiology
pub_type: 杂志文章
doi:10.1007/s00256-019-03171-7
更新日期:2019-09-01 00:00:00
abstract::Juxta-articular inflammatory masses, sternomanubrial or sternoclavicular, were noted in two women who were subsequently found to have ankylosing spondylitis. The differential diagnosis of juxta-articular masses should include systemic rheumatic disorders as well as tumor or infection. ...
journal_title:Skeletal radiology
pub_type: 杂志文章
doi:10.1007/BF00367763
更新日期:1987-01-01 00:00:00