Asymmetrical vertebral collapse from spinal metastasis in lower thoracic and lumbar spine

Suzuki, Takayoshi; Katagiri, Hirohisa; Noda, Tatsuya; Ota, Satoshi; Murata, Hideki; Wasa, Junji; Hosaka, Seiichi; Shimoyama, Tetsuo; Takahashi, Mitsuru

doi:10.1016/j.jos.2016.12.013

Cited by 3 publications

(2 citation statements)

References 13 publications

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“…The frequency of the appearance of pedicle signs depends on whether radiographs were taken at a patient's first clinical research hospital visit 6 . The frequency of pedicle signs identified using radiography that have been reported previously varies between 22 and 95% 7,8,18,19 .…”

Section: Discussionmentioning

confidence: 86%

Association of Pedicle Sign Type with Clinical and Radiological Features in Patients with Symptomatic Spinal Metastases

et al. 2021

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Background: Cancer diagnoses are increasing rapidly due to the aging population of Japan. Pedicle sign is a valuable radiographic indicator of metastases as the pedicle is the most commonly affected part of the vertebra upon radiographic assessment. However, few detailed studies examining the morphological features of pedicle signs have been performed. To improve the capacity of medical professionals to diagnose symptomatic spinal metastases, we retrospectively examined the morphological characteristics of pedicle signs and their relationship with clinical and radiological features. Methods: In total, 186 patients with symptomatic spinal metastases who visited our department between January 1, 2011, and December 31, 2017, were enrolled in the study. Pedicle sign was defined as a pedicle that had disappeared or had become obscured on an anteroposterior radiographic image. Radiographic images were evaluated for pedicles and other structures of the vertebrae. Clinical and other radiological features were compared among the types of pedicle signs identified. Results: Pedicle signs were classified according to whether they had completely disappeared (complete type, 26 patients), partially disappeared (partial type, 40 patients), or were obscured by the osteoblastic background (blastic type, 28 patients). The disappearance of the bone cortex in addition to the pedicle was observed in almost half of the patients with complete and partial types of pedicle signs. Complete types were associated with significantly longer survival rates. Conclusion: Understanding of the various types of pedicle sign is required to properly diagnose bone metastases.

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Section: Discussionmentioning

confidence: 86%

Association of Pedicle Sign Type with Clinical and Radiological Features in Patients with Symptomatic Spinal Metastases

et al. 2021

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“…When asymmetrical vertebral collapse was observed, bone metastasis was suspected at 5 degrees or more asymmetrical vertebral collapse according to the method of Suzuki et al 7 . Using CT images, the morphological patterns of bone metastasis were classified into the osteolytic, mildly osteolytic, intertrabecular, mildly osteoblastic, osteoblastic, and mixed types.…”

Section: Study Variablesmentioning

confidence: 99%

Spinal Metastases without Pedicle Signs on Radiograph and their Associated Clinical and Radiological Features

et al. 2022

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Purpose: The pedicle sign is a radiographic indicator of spinal metastases. However, it is not only the pedicle sign that is important in radiographic diagnosis of bone metastases.In the present study, the radiological features of symptomatic spinal metastases in patients without the pedicle sign were retrospectively examined.Materials and methods: Among 186 patients with symptomatic spinal metastases who visited our department between January 1, 2011, and December 31, 2017, 64 without the pedicle sign and with available computed tomography (CT) and magnetic resonance imaging (MRI) data in the first visit were enrolled and their data were analyzed. One author evaluated radiographs for findings suggestive of spinal metastases, CT to assess bone destruction, and MRI to evaluate the extent of lesions. Clinical variables were also examined and compared between patients with and without bone changes on radiography.Results: Bone changes strongly suggesting bone metastasis, other than the pedicle sign, were observed in 31 out of 64 patients: bone cortical disappearance in 20, increased radiolucency of the central area in the vertebral body in 8, an irregular osteoblastic change in 5, and asymmetrical vertebral collapse in 10. An analysis of CT data revealed that intertrabecular, mildly osteolytic, and mildly osteoblastic types were more frequent in patients without any changes suggestive of bone metastases on radiographs. Conclusion: Radiographic findings other than the pedicle sign are useful for diagnosing bone metastases. The key to a radiographic diagnosis of spinal metastases is to pay attention to changes in the bone cortex of all vertebral components on radiographs in addition to the pedicle.

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The filling proportion of bone cement affects recollapse of vertebrae after percutaneous vertebral augmentation: A retrospective cohort study

Song

Ding

Chen

et al. 2017

International Journal of Surgery

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Asymmetrical vertebral collapse from spinal metastasis in lower thoracic and lumbar spine

Cited by 3 publications

References 13 publications

Association of Pedicle Sign Type with Clinical and Radiological Features in Patients with Symptomatic Spinal Metastases

Association of Pedicle Sign Type with Clinical and Radiological Features in Patients with Symptomatic Spinal Metastases

Spinal Metastases without Pedicle Signs on Radiograph and their Associated Clinical and Radiological Features

The filling proportion of bone cement affects recollapse of vertebrae after percutaneous vertebral augmentation: A retrospective cohort study

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