scholarly journals Anterior Mediastinal Bronchogenic Cysts Manifesting as a Solid Mass: A Report of Three Cases

2012 ◽  
Vol 66 (4) ◽  
pp. 347
Author(s):  
Sung Hye Yoo ◽  
Soo Youn Ham ◽  
Eun Jeong Choi ◽  
Yu Whan Oh ◽  
Kwang Taik Kim ◽  
...  
2011 ◽  
Vol 123 (5-6) ◽  
pp. 179-182 ◽  
Author(s):  
Cornelis G. Vos ◽  
Koen J. Hartemink ◽  
Richard P. Golding ◽  
J. Wolter A. Oosterhuis ◽  
Marinus A. Paul

2005 ◽  
Vol 173 (4S) ◽  
pp. 14-15
Author(s):  
Igor Frank ◽  
Bradley C. Leibovich ◽  
Christine M. Lohse ◽  
Horst Zincke ◽  
Michael L. Blute

2006 ◽  
Vol 40 (Supplement 4) ◽  
pp. S190
Author(s):  
Ming-Jang Hsieh ◽  
Sheung-Fat Ko ◽  
Jui-Wei Lin ◽  
Chung-Cheng Huang ◽  
Chih-Chia Li ◽  
...  

2021 ◽  
Vol 15 ◽  
pp. 117955652110216
Author(s):  
Parisa Oviedo ◽  
Morgan Bliss

Objective: Masses of the sternoclavicular area are rare, and are not well described in the literature. We aim to present a series of patients with masses in this location and to review all reported English language cases of sternoclavicular masses in pediatric patients. Methods: This is a case series of pediatric patients with masses of the sternoclavicular area presenting to a tertiary care pediatric hospital from 2010 through 2017. Data was collected by using ICD-9 and ICD-10 codes to query the electronic medical record. Chart review included age at presentation, mass characteristics, medical and surgical interventions, and pathology results. A review of the literature was then performed. Results: Ten patients with masses overlying the sternoclavicular area were identified. Four patients presented with abscess and were treated with incision and drainage. Three of these patients were then treated with staged excision once infection cleared. Two additional patients were treated with primary excision. Four patients were treated with observation. The most common histopathologic finding was epidermoid. One patient was found to have a dermoid cyst, and 1 had a congenital cartilaginous rest. Conclusion: Epidermoids and dermoids are the most common masses overlying the sternoclavicular area. Controversy remains regarding the embryologic origin of sternoclavicular masses. The differential for masses in this area also includes branchial remnants, bronchogenic cysts, ganglion cysts, or septic arthritis.


Reports ◽  
2021 ◽  
Vol 4 (1) ◽  
pp. 4
Author(s):  
Sawako Ono ◽  
Hotaka Kawai ◽  
Shintaro Sukegawa ◽  
Kiyofumi Takabatake ◽  
Keisuke Nakano ◽  
...  

Primordial odontogenic tumor (POT) is a rare odontogenic tumor characterized by a variably cellular loose fibrous tissue with areas similar to the dental papilla and covered by cuboidal to columnar epithelium. We herein report a case of POT in a 14-year-old boy. Computed tomography (CT) exhibited a round cavity with a defined cortical border circumscribing the tooth of the second molar. However, the gross finding was a solid mass, not a cyst. Histologically, the tumor consisted of dental papillalike myxoid connective tissue covered by columnar epithelium. Therefore, although the clinical diagnosis was dentigerous cyst (DC), we diagnosed POT based on histologic findings. Clinical findings of POT resemble DC, but the clinical behavior of POT is different to DC, such as cortical expansion and root resorption of teeth. Therefore, histological differentiation of POT from DC is critical for accurate diagnosis.


Author(s):  
Pengju Huo ◽  
Xiaohong Li ◽  
Yang Liu ◽  
Haiying Qi

AbstractThe influences of loose gas on gas-solid flows in a large-scale circulating fluidized bed (CFB) gasification reactor were investigated using full-loop numerical simulation. The two-fluid model was coupled with the QC-energy minimization in multi-scale theory (EMMS) gas-solid drag model to simulate the fluidization in the CFB reactor. Effects of the loose gas flow rate, Q, on the solid mass circulation rate and the cyclone separation efficiency were analyzed. The study found different effects depending on Q: First, the particles in the loop seal and the standpipe tended to become more densely packed with decreasing loose gas flow rate, leading to the reduction in the overall circulation rate. The minimum Q that can affect the solid mass circulation rate is about 2.5% of the fluidized gas flow rate. Second, the sealing gas capability of the particles is enhanced as the loose gas flow rate decreases, which reduces the gas leakage into the cyclones and improves their separation efficiency. The best loose gas flow rates are equal to 2.5% of the fluidized gas flow rate at the various supply positions. In addition, the cyclone separation efficiency is correlated with the gas leakage to predict the separation efficiency during industrial operation.


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