Journal of X-Ray Science and Technology - Volume 26, issue 1

Authors: Wang, Fei | Xu, Jianbing | Chen, Jianxiang | Fu, Housheng | Wang, Zhongyao | Cai, Dehai | Kang, Xinli | Zhang, Bruce B. | Matz, Ethan L. | Zhang, Yuanyuan | Wang, Weifu

Article Type: Research Article

Abstract: Rosai-Dorfman disease (RDD) is a rare histiocytic disorder of unclear etiology, which commonly presented with the enlargement of lymph nodes of the neck and the head. Here, we report an unusual case of 77-year-old male patient presenting with left kidney lesion with several small enlarged lymph nodes around the abdominal aorta. The diagnosis of left kidney cancer was suspected and the patient underwent left laparoscopic exploration and lymph node biopsy. Only saponification of the renal surrounding fat and enlargement of the left renal pedicle and 5 abdominal aortic lymph nodes were found; no kidney cancer was found. Surrenalectomy and lymphadenectomy …dissection were then performed and the left kidney was retained. Intraoperative frozen and postoperative pathology indicates Rosai-Dorfman disease. RDD with kidney involvement is uncommon, and its x-ray imaging appearances are atypical, and often resemble kidney cancer leading to kidney loss. A systematic literature review was also performed to investigate the x-ray imaging and treatment features of this disease. Show more

Keywords: Rosai-Dorfman disease (RDD), kidney involvement, laparoscopic exploration, lymph node biopsy

DOI: 10.3233/XST-17345

Citation: Journal of X-Ray Science and Technology, vol. 26, no. 1, pp. 141-146, 2018

Authors: Wu, Jun | Wang, Cui | Li, Ming | Luo, Cong | Liu, Xing | Xie, Lina | He, Ling | Gong, Mengjia | Hu, Zujie | Bleyer, Anthony J. | Zhang, Yuanyuan

Article Type: Research Article

Abstract: OBJECTIVE: This study aimed to investigate the application of 3D computed tomography (CT) angiography with a novel post-processing technique in diagnosis of malignant bone tumors in children. METHODS: Twenty-seven pediatric patients (15 males and 12 females; average age: 10±3.4 years old, with a range from 2 months to 14 years old) with suspected bone tumors were evaluated histopathologically using 3D CT angiography and a multislice scanner. CT angiography image data were analyzed with a novel post-processing technique that included separating, fusing opacifying false-coloring, and volume rendering. RESULTS: Among 27 cases, 20 (74%) osteosarcoma, 6 (22%) Ewing’s …sarcoma, and 1 (4%) non-Hodgkin lymohoma were diagnosed by histological examination of surgical specimens. The tumor features, including size, location, invasion into the adjacent tissue as well as distant metastases, were clearly visualized with the regular volume rendering method and rotational and stereoscopical videos. The post-processing technique provided the reconstructed structure images without any overlap or shelter independently and collectively. Special colors represented different tissue structures, aiding in identification of various anatomical structures and pre-surgical planning. CONCLUSIONS: Compared to traditional 3-D CT methods, 3-D CT angiography with rotational and stereoscopical videos provides more detailed information of bone tumor lesions. It offers a superior and effective imaging technique in pediatric patients with malignant bone tumors. Show more

Keywords: Malignant bone tumor, post-processing technique, computed tomography, angiography, imaging vivisection

DOI: 10.3233/XST-17346

Citation: Journal of X-Ray Science and Technology, vol. 26, no. 1, pp. 147-154, 2018

Authors: Yao, Li | Zhang, Yuanyuan | Chen, Qijun | Wang, Shuai | Wang, Qingjian | Yi, Jie | Zhang, Ligang | Matz, Ethan L. | Hu, Xiaohua | Huang, Guilin

Article Type: Research Article

Abstract: Lymphoepithelial carcinoma (LEC) is an uncommon malignant neoplasm. Due to the complicated anatomical structure of the human head, standard imaging modalities including ultrasound, computed tomography (CT) and magnetic resonance imaging (MRI) scan remain limited in detection of salivary tumors. We used three-dimensional computed tomography angiography (3D-CT angiography) for the assessment and pre-operative surgical planning of facial fractures of a case with LEC. The study results demonstrated that 3D-CT angiography provided an insightful approach to preoperative evaluation in the treatment of salivary tumors.

Keywords: Lymphoepithelial carcinoma, parotid gland, three dimensional computed tomography

DOI: 10.3233/XST-17347

Citation: Journal of X-Ray Science and Technology, vol. 26, no. 1, pp. 155-164, 2018

Authors: Zhang, Tianxi | Wang, Yan | Ye, Peng | Liu, Jiaji | Cheng, Yun | Wang, Shuhong | Rohozinski, Jan | Zhang, Yuanyuan | Yu, Anyong

Article Type: Research Article

Abstract: Despite common injury caused by snakebite, snakebite-induced ischemic stroke is rare. We reported on a patient who incurred a large cerebral infarction after being bitten by a Deinagkistrodon acutus, one of the most poisonous snakes in the southwestern of China. Applying 3D computed tomography (CT) of head combined with cerebral angiography examinations showed a large cerebral infarction, hernia in the right brain, developmental abnormalities of the right middle cerebral artery and cerebral artery of right brain. In conclusion, head CT imaging combined with cerebral angiography provides an efficient approach in diagnosis of stroke caused by snakebites.

Keywords: Snakebite, Deinagkistrodon acutus, cerebral infarction, 3D head computed tomography (CT)

DOI: 10.3233/XST-17348

Citation: Journal of X-Ray Science and Technology, vol. 26, no. 1, pp. 165-169, 2018