scholarly journals Incidental enchondromas at knee magnetic resonance imaging: intraobserver and interobserver agreement and prevalence of imaging findings

2013 ◽  
Vol 46 (3) ◽  
pp. 129-133 ◽  
Author(s):  
Sandra Akemi Nakamura ◽  
Mário Müller Lorenzato ◽  
Edgard Eduard Engel ◽  
Maurício Eiji de Almeida Santos Yamashita ◽  
Marcello Henrique Nogueira-Barbosa
Keyword(s):  
Magnetic Resonance Imaging ◽  
Bone Marrow ◽  
Magnetic Resonance ◽  
Interobserver Agreement ◽  
Magnetic Resonance Images ◽  
Imaging Findings ◽  
Resonance Imaging ◽  
Bone Marrow Signal ◽  
Marrow Signal ◽  
Knee Magnetic Resonance Imaging

Objective To evaluate intra- and interobserver agreement in the identification of incidental enchondromas at knee magnetic resonance imaging, and to assess the prevalence of imaging findings. Materials and Methods Retrospective study reviewing 326 knee magnetic resonance images acquired in the period between November 2009 and September 2010. The images were independently and blindly analyzed by two specialists in musculoskeletal radiology, with the objective of identifying incidental enchondromas, presence of foci with signal similar to bone marrow and foci of signal absence suggestive of calcifications within the enchondromas. Inter- and intraobserver agreements were analyzed. Results Eleven lesions compatible with enchondromas (3.3%) were identified. The interobserver agreement for the presence of enchondroma was high. Prevalence of foci of bone marrow signal inside the enchondromas was of 54.55%, and foci suggestive of calcification corresponded to 36.36%. The intraobserver agreement for foci of bone marrow signal in enchondromas was perfect, and interobserver agreement was high. Conclusion The prevalence of incidental enchondromas in the current study was compatible with data in the literature. Excellent agreement was observed in the identification of enchondromas and in the assessment of imaging findings. A higher prevalence of fat signal foci was observed as compared with signal absence suggestive of calcifications.

scholarly journals Incidence and Evaluation of Incidental Abnormal Bone Marrow Signal on Magnetic Resonance Imaging

2014 ◽  
Vol 2014 ◽  
pp. 1-6 ◽  
Author(s):  
Gunjan L. Shah ◽  
Aaron S. Rosenberg ◽  
Jamie Jarboe ◽  
Andreas Klein ◽  
Furha Cossor
Keyword(s):  
Magnetic Resonance Imaging ◽  
Bone Marrow ◽  
Magnetic Resonance ◽  
Complete Blood Count ◽  
Medical Center ◽  
Resonance Imaging ◽  
Bone Marrow Signal ◽  
Abnormal Bone Marrow ◽  
Marrow Signal

Purpose. The increased use of magnetic resonance imaging (MRI) has resulted in reports of incidental abnormal bone marrow (BM) signal. Our goal was to determine the evaluation of an incidental abnormal BM signal on MRI and the prevalence of a subsequent oncologic diagnosis.Methods. We conducted a retrospective cohort study of patients over age 18 undergoing MRI between May 2005 and October 2010 at Tufts Medical Center (TMC) with follow-up through November 2013. The electronic medical record was queried to determine imaging site, reason for scan, evaluation following radiology report, and final diagnosis.Results. 49,678 MRIs were done with 110 patients meeting inclusion criteria. Twenty two percent underwent some evaluation, most commonly a complete blood count, serum protein electrophoresis, or bone scan. With median follow-up of 41 months, 6% of patients were diagnosed with malignancies including multiple myeloma, non-Hodgkins lymphoma, metastatic non-small cell lung cancer, and metastatic adenocarcinoma. One patient who had not undergone evaluation developed breast cancer 24 months after the MRI.Conclusions. Incidentally noted abnormal or heterogeneous bone marrow signal on MRI was not inconsequential and should prompt further evaluation.

Relapsing Polychondritis With Increased Bone Marrow Signal on Magnetic Resonance Imaging in a 13-Year-Old Girl

2018 ◽  
Vol 24 (1) ◽  
pp. 52-54 ◽  
Author(s):  
Kanako Nakayama ◽  
Sayaka Yamamoto ◽  
Kimiaki Uetake ◽  
Masafumi Yamada ◽  
Yusuke Tozawa ◽  
...  
Keyword(s):  
Magnetic Resonance Imaging ◽  
Bone Marrow ◽  
Magnetic Resonance ◽  
Relapsing Polychondritis ◽  
Resonance Imaging ◽  
Bone Marrow Signal ◽  
Marrow Signal

Juxta-articular bone marrow signal changes on magnetic resonance imaging following arthroscopic meniscectomy

2002 ◽  
Vol 18 (3) ◽  
pp. 238-245 ◽  
Author(s):  
Yasukazu Kobayashi ◽  
Masashi Kimura ◽  
Hiroshi Higuchi ◽  
Masanori Terauchi ◽  
Kenji Shirakura ◽  
...  
Keyword(s):  
Magnetic Resonance Imaging ◽  
Bone Marrow ◽  
Magnetic Resonance ◽  
Resonance Imaging ◽  
Bone Marrow Signal ◽  
Arthroscopic Meniscectomy ◽  
Signal Changes ◽  
Marrow Signal

scholarly journals The Prediction of Lymphohematopoietic Diseases by Incidentally-Detected Diffuse Signal Alterations of Bone Marrow on MRI

Acta Medica ◽  
2020 ◽  
Vol 51 (4) ◽  
pp. 48-53
Author(s):  
Rafiye Ciftciler ◽  
Kader Karlı Oguz ◽  
Yahya Buyukasik
Keyword(s):  
Magnetic Resonance Imaging ◽  
Multiple Myeloma ◽  
Bone Marrow ◽  
Magnetic Resonance ◽  
Imaging Techniques ◽  
Resonance Imaging ◽  
Bone Marrow Signal ◽  
Time Of Presentation ◽  
Marrow Signal

Objective: Advanced imaging techniques are increasingly used in the diagnostic workup of patients. The clinical significance of incidentally-detected signal alterations of the bone marrow on magnetic resonance imaging has not been widely studied. The purpose of this study was to determine whether bone marrow signal changing on magnetic resonance imaging could predict a hematologic disease. Materials and Methods: Thirty patients who were referred to Hematology department due to bone marrow signal alteration on magnetic resonance imaging between the years of 2011 and 2018 were evaluated. Results: There were 8 males and 22 females with a median age of 53 (range, 31–86) years at the time of presentation to the Hematology clinic. The magnetic resonance imaging studies had been taken because the patients had complaints of pain in extremities or lumbago (80%). The patients had been followed for median 4.5 months (0-71.7). Six (20%) cases had a bone marrow biopsy at presentation and a diagnosis was established in 5 (16.6%) of them (1 patient was diagnosed acute myeloid leukemia, 4 patients were diagnosed multiple myeloma). Marrow biopsy was done in 11 of the cases during follow-up median 3.8 months (1.3-11.5) after presentation. A diagnosis was made in 9 cases (5 patients were diagnosed multiple myeloma, 2 patients were diagnosed follicular lymphoma, 1 patient was diagnosed waldenstrom macroglobulinemia). Thirteen cases never had a biopsy. These cases had been followed for 1.3 months (0-71.7). None of them showed clinical abnormalities related to a lymphohematopoietic disorder and/or diagnosed with such a disorder. Only 1 patient was diagnosed with osteomalacia at follow-up. Conclusion: Incidentally-detected signal alterations of the bone marrow on magnetic resonance imaging should trigger investigations for a marrow problem. Most of the diagnosis patients were multiple myeloma. Extremity pain and findings like anemia may be associated with lymphohematological malignancies.

scholarly journals Interobserver reliability of the classification of capitellar osteochondritis dissecans using magnetic resonance imaging

2019 ◽  
Vol 12 (4) ◽  
pp. 284-293 ◽  
Author(s):  
Rens Bexkens ◽  
F. Joseph Simeone ◽  
Denise Eygendaal ◽  
Michel PJ van den Bekerom ◽  
Luke S Oh ◽  
...  
Keyword(s):  
Magnetic Resonance Imaging ◽  
Magnetic Resonance ◽  
Osteochondritis Dissecans ◽  
Interobserver Agreement ◽  
Interobserver Reliability ◽  
Lateral Wall ◽  
Magnetic Resonance Images ◽  
Resonance Imaging ◽  
Instability Criteria

Aim (1) To determine the interobserver reliability of magnetic resonance classifications and lesion instability criteria for capitellar osteochondritis dissecans lesions and (2) to assess differences in reliability between subgroups. Methods Magnetic resonance images of 20 patients with capitellar osteochondritis dissecans were reviewed by 33 observers, 18 orthopaedic surgeons and 15 musculoskeletal radiologists. Observers were asked to classify the osteochondritis dissecans according to classifications developed by Hepple, Dipaola/Nelson, Itsubo, as well as to apply the lesion instability criteria of DeSmet/Kijowski and Satake. Interobserver agreement was calculated using the multirater kappa (k) coefficient. Results Interobserver agreement ranged from slight to fair: Hepple (k = 0.23); Dipaola/Nelson (k = 0.19); Itsubo (k = 0.18); DeSmet/Kijowksi (k = 0.16); Satake (k = 0.12). When classifications/instability criteria were dichotomized into either a stable or unstable osteochondritis dissecans, there was more agreement for Hepple (k = 0.52; p = .002), Dipaola/Nelson (k = 0.38; p = .015), DeSmet/Kijowski (k = 0.42; p = .001) and Satake (k = 0.41; p < .001). Overall, agreement was not associated with the number of years in practice or the number of osteochondritis dissecans cases encountered per year (p > .05). Conclusion One should be cautious when assigning grades using magnetic resonance classifications for capitellar osteochondritis dissecans. When making treatment decisions, one should rather use relatively simple distinctions (e.g. stable versus unstable osteochondritis dissecans; lateral wall intact versus not intact), as these are more reliable.

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