Search

Your search keyword '"Mao, Xijin"' showing total 9 results
Start Over Author "Mao, Xijin"
9 results on '"Mao, Xijin"'

5. Inflammatory myofibroblastic tumor of the lumbar spinal canal

Author

Wang, Shanshan, Chen, Liang, Cao, Zhang, Mao, Xijin, Zhang, Lin, and Wang, Bin

Subjects
Male, Lumbar Vertebrae, lumbar canal, Middle Aged, Granuloma, Plasma Cell, Diagnosis, Differential, magnetic resonance imaging, Humans, inflammatory myofibroblastic tumor, Spinal Diseases, Clinical Case Report, Spinal Canal, Research Article
Abstract

Rationale: Inflammatory myofibroblastic tumor (IMT) is a rare type of mesenchymal tumor. IMT can arise in multiple anatomic locations. IMT of the lumbar spinal canal is exceptionally rare. Patient concerns: Here, we report the case of a 56-year-old male patient with an IMT who was in good health until 1 year prior to admission, when he began experiencing pain in both lower extremities and the lower back. Interventions: A space-occupying lesion in the lumbar canal was identified by magnetic resonance imaging and then surgically resected. Diagnoses: Histopathological analysis of the lesion revealed a composition of mucous edema, inflammatory cells, collagenous fibers, and spindle cells that were diffuse and positive for smooth muscle actin and CD68; focal positive for vimentin and desmin; and negative for CD34 (marker of vascular endothelial cells), CD21, CD23, CD35, S-100, Epstein–Barr virus infection, Ki-67, and anaplastic lymphoma kinase. Thus, the diagnosis was an IMT of the lumbar canal. Outcomes: In the spinal canal, IMT should be considered in the evaluation of tumors although it is a very rare diagnosis. It is a benign lesion, but it has potential for invasion and recurrence. Lessons: There are no characteristic imaging features of these tumors, but they can be addressed by complete surgical excision. Patients with these lesions should undergo frequent long-term follow-up to detect and address recurrence.

Published
2017

9. [Comparative study of identification of pulmonary perfusion with dual source computed tomography in diagnosing pulmonary embolism].

Author

Mao X, Zhang L, Fan W, and Xu W

Subjects
Humans, Perfusion, Perfusion Imaging, Pulmonary Artery, Pulmonary Embolism, Tomography, X-Ray Computed
Abstract

Objective: To explore the diagnostic value of dual source computed tomography (CT) in the diagnosing acute pulmonary embolism (PE)., Methods: A total of 20 cases with suspected PE were scanned by dual source CT and the data were analyzed with the software packages of conventional 3D, pulmonary embolism detection (PED), lung vessels and lung PBV. The examination with the highest detection rate was used to screen for pulmonary segment of PE and verify the diagnostic consistency with dual-energy perfusion imaging (DEPI) on pulmonary segment of PE., Results: The detection rates for PE in pulmonary artery branches were all 30% for CTPA, lung vessels and PED. There were no statistical difference. The detection rates for PE in pulmonary lobar arteries were 47.0%, 49% and 50% for CTPA, lung vessels and PED. There were no statistical difference. The detection rates for PE in pulmonary segment arteries were 14.2%, 19.7% and 26.1% for CTPA, lung vessels and PED. Statistical differences existed among CTPA, lung vessels and PED. The detection rates for PE in pulmonary subsegment arteries were 3.7%, 4.5% and 7.0% for CTPA, lung vessels and PED. Statistical differences existed between PED, CTPA and lung vessels. No statistical difference existed between CTPA and lung vessels. PED had the higher clinical value on the diagnosis of PE of pulmonary segmental artery and inferior segmental artery. The sensitivity of DEPI for PE was 85.7%, specificity 94.1% and kappa 0.789. The diagnosis on PE of DEPI and PED image had a higher consistency., Conclusion: The dual-energy scanning of dual source CT has higher practical values in the diagnosis of PE. And PED can visualize the pulmonary artery segment and a downstream segment of PE. Pulmonary perfusion imaging may show the perfusion abnormalities due to pulmonary blood flow changes. A combination of both increases the diagnostic rate of PE.

Published
2014

Catalog

Books, media, physical & digital resources
See catalog results