scholarly journals Vertebrae adjacent to spinal bone lesion are inconsistent reference markers: A magnetic resonance spectroscopic viewpoint

2006 ◽  
Vol 23 (4) ◽  
pp. 574-577 ◽  
Author(s):  
Helmut Rumpel ◽  
Ling Ling Chan ◽  
Lai Peng Chan ◽  
Meng Ai Png ◽  
Raymond K.L. Tan ◽  
...  
Keyword(s):  
Magnetic Resonance ◽  
Bone Lesion ◽  
Reference Markers

Aneurysmal bone cyst

1993 ◽  
Vol 83 (10) ◽  
pp. 595-597 ◽  
Author(s):  
RG Schmidt ◽  
YM Kabbani ◽  
DP Mayer
Keyword(s):  
Magnetic Resonance Imaging ◽  
Magnetic Resonance ◽  
Aneurysmal Bone Cyst ◽  
Signal Intensity ◽  
Bone Cyst ◽  
Bone Lesion ◽  
Resonance Imaging ◽  
Weighted Magnetic Resonance Imaging ◽  
Fluid Levels ◽  
T2 Weighted Images

Key findings that aid in the diagnosis of an aneurysmal bone cyst are: 1) typically the patients are young individuals less than 20 years old; 2) an expansile bone lesion is bordered by a thin, low signal intensity rim mass; 3) the lesion is inhomogenously increased in signal on T2-weighted images; and 4) multiple fluid-fluid levels are seen with the mass on T2-weighted magnetic resonance imaging scans.

Fossa trochanterica of the proximal femur in rabbits: An anatomic structure for potential misinterpretation on magnetic resonance images

2009 ◽  
Vol 50 (2) ◽  
pp. 212-216 ◽  
Author(s):  
Hao-Hao Wang ◽  
Yi-Xiang J. Wang ◽  
Hui Sheng ◽  
Ge Zhang ◽  
Ling Qin ◽  
...  
Keyword(s):  
New Zealand ◽  
Magnetic Resonance ◽  
Femoral Head ◽  
Proximal Femur ◽  
Bone Lesion ◽  
Zealand White Rabbit ◽  
Magnetic Resonance Images ◽  
Mr Images ◽  
Single Plane ◽  
Anatomic Structure

Background: Magnetic resonance imaging (MRI) has been increasingly used as an investigational tool for assessing the structure and function of animal skeletal disease models. However, to date, MRI tomographic knowledge of laboratory animal skeletal anatomy and pathology remains limited. Purpose: To demonstrate that fossa trochanterica of the proximal femur in rabbits can potentially be misinterpreted as a bone lesion on MR images. Material and Methods: Twenty 28–30-week-old male New Zealand white rabbits were used in the study. Corticosteroid-induced osteonecrosis induction was carried out with a combined administration of lipopolysaccharide and methylprednisolone. In this animal model, it is known that osteonecrosis commonly occurs in the proximal femur. MRI at 1.5T was performed before osteonecrosis induction, and at 1 and 2 weeks post-osteonecrosis induction. For anatomical imaging of the proximal femur, coronal sectional images were obtained to align the femoral head, neck, and proximal shaft in a single plane. Volumetric computed tomography (CT) comprised continuous axial acquisitions through the bilateral hip joints and femurs and was performed on one age- and sex-matched New Zealand white rabbit to correlate MRI anatomical findings. Results: In 30% of the acquired normal data sets, a low-signal area surrounded by high-signal bone marrow was observed slightly distal to the femoral head and medial to the third trochanter. This dark, low-signal area resembled an osteonecrosis lesion on MR images. Volumetric CT clarified that the low MR signal was due to the deep fossa trochanterica structure in the rabbit proximal femur. Conclusion: Improved understanding of the cross-sectional anatomy of the fossa trochanterica in the rabbit proximal femur will prevent misinterpretation as a bone lesion on MR images.

scholarly journals Osteoid osteoma of the rib with strong F-18 fluoro-deoxyglucose uptake mimicking osteoblastoma: a case report with literature review

2021 ◽  
Vol 10 (6) ◽  
pp. 205846012110224
Author(s):  
Yuka Ishikura ◽  
Rika Yoshida ◽  
Takeshi Yoshizako ◽  
Kouji Kishimoto ◽  
Noriyoshi Ishikawa ◽  
...  
Keyword(s):  
Magnetic Resonance Imaging ◽  
Computed Tomography ◽  
Magnetic Resonance ◽  
Osteoid Osteoma ◽  
Fdg Pet ◽  
Bone Lesion ◽  
Standardized Uptake Value ◽  
Resonance Imaging ◽  
Fdg Uptake ◽  
Positron Emission

Osteoid osteoma is a benign osteoblastic bone lesion, characterized by nocturnal pain alleviated by salicylates or nonsteroidal anti-inflammatory drugs. This tumor distinctly affects the long bones, typically the femur or tibia and is rarely located in the ribs. Usually, this tumor is usually diagnosed by computed tomography or magnetic resonance imaging, but F-18 fluoro-deoxyglucose positron emission tomographic (FDG-PET)/computed tomography is usually negative and is not used for diagnosis. We recently encountered a case of an osteoid osteoma located in the rib of 44-year-old Asian male with strong FDG uptake as high as 12.0 at the maximum standardized uptake value at FDG-PET/computed tomography. His computed tomography and magnetic resonance imaging showed osteosclerosis, bone marrow edema, and edema of surrounding tissues not only in the bone with nidus but also in the adjacent bone, and pathological findings showed strong infiltration munched radiology. Strong FDG uptake mimicking osteoblastoma. Osteoid osteoma with strong FDG uptake suggested a strong inflammatory response.

scholarly journals Usual acinar adenocarcinoma and osteoblastic lesion in the distal middle third of the femur, an unusual finding: a case report / Adenocarcinoma acinar usual e lesão osteoblástica no terço médio distal do fêmur, um achado incomum: relato de caso

2021 ◽  
Vol 4 (6) ◽  
pp. 29065-29076
Author(s):  
Isabela Nicoletti Merotti ◽  
Alessandra dos Santos Danziger Silvério ◽  
Gabriela Teixeira Bazuco ◽  
Simone Caetani Machado
Keyword(s):  
Magnetic Resonance Imaging ◽  
Prostate Cancer ◽  
Magnetic Resonance ◽  
Early Stage ◽  
Bone Lesion ◽  
Metastatic Lesion ◽  
Total Testosterone ◽  
Resonance Imaging ◽  
Left Femur ◽  
Total Psa

A patient with prostate cancer may initially be asymptomatic, compromising early diagnosis and treatment. A 42-year-old male patient on a routine examination had a PSA of 4.18 ng / ml. Prostate biopsy revealed usual Gleason 7 stage T2a acinar adenocarcinoma. Magnetic resonance imaging revealed a nodule in the prostate. Bone scintigraphy showed osteoblastic lesion of the left femur, considered a possibility of a secondary lesion to adenocarcinoma, but his biopsy showed tissue without significant histological changes, ruling out malignancy. The patient was submitted to a radical prostatectomy and bilateral lymphadenectomy, evolving without complications. Follow-up tests showed reactive Protein C negative, alkaline phosphatase, lactate dehydrogenase and total testosterone without changes, total PSA 0.011; Free PSA less than 0.01. The total PSA 0.3 indicated a possible recurrence after 3 years. Magnetic resonance imaging showed no suspicious lesions, PET / CT was performed, which showed molecular hyperexpression of specific membrane antigen for the prostate, confirming local recurrence. Therefore, he was submitted to 36 radiotherapy sessions in the prostate bed from July to August. In October, the total PSA was performed, which decreased sharply. The early stage of prostate cancer may show only benign prostate growth, while the advanced stage may reveal bone pain. Bone tissue often develops a metastatic lesion, resulting in a worse prognosis. In this patient, a link between prostate carcinoma and bone lesion was ruled out by biopsy, which demonstrated the absence of spread of the disease.

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