Biomedical subjects

Wen-tong Ge

Publications and source records attributed to Wen-tong Ge.

6 recordsLinked to original sources

PubMed2006

[Computed tomographic and endoscopic analysis of the supraorbital ethmoid cell anatomy].

OBJECTIVE: To understand the anatomy of the supraorbital ethmoid cell and its relationship with the frontal sinus drainage pathway. METHODS: Five patients (5 sides) who had supraorbital ethmoid cell underwent endoscopic frontal sinus surgery. Computed tomographic (CT) scans of the sinuses were obtained in coronal and axial views. The frontal sinus ostium and the supraorbital ethmoid cell were endoscopically identified respectively. RESULTS: On coronal CT scans, the supraorbital ethmoid cell was a separate cell lateral to the frontal sinus. And on axial CT scans, it was lateral and posterior to the frontal sinus drainage pathway. Under endoscope, its opening was lateral and posterior to the frontal sinus ostium. CONCLUSIONS: The supraorbital ethmoid cell extended superolateral the boundaries of the lamina papyracea and the roof of the ethmoid to pneumatize the orbital plate of the frontal bone.

Adult↗

PubMed2006

[Spiral computed tomographic analysis of frontal recess regions].

OBJECTIVE: The purpose of the study was to determine the prevalence of frontal recess cells in Chinese patients who did not have frontal sinus disease related symptoms. METHODS: Forty-nine Chinese patients without frontal sinus disease symptoms were undergone spiral computed tomography (CT). Then multiplanar reconstruction images were evaluated using a standard triplanar reconstruction protocol on a computer workstation. RESULTS: The prevalence of agge rnasi cell was 94% (92/98). Sixty-four uncinate processes (65%, 64/98) had one superior attachment for each uncinate process, the other thirty-four uncinate processes (35%, 34/98) had two superior attachments for each uncinate process. The uncinate process' single superior attachment into the surrounding structures was identified to have the following distribution: 53% (52/98) to the lamina papyracea, 9% (9/98) to the middle turbinate, 3% (3/98) to the skull base. Most of the uncinate process' two superior attachments were either into the lamina papyracea and the skull base (24%, 23/98) or into the lamina papyracea and the middle turbinate (10%, 10/98). Only one uncinate process (1%) superiorly attached to the skull base and the middle turbinate. The prevalence of recessus terminalis was 87% (85/98). Of all the frontal cells identified in 32 sides (33%) of frontal recesses, the prevalence of type I, type II, type II and type IV cells were 23% (23 sides), 2% (2 sides), 7% (7 sides) and 0% (0 side) respectively. Supra bullar cell, frontal bullar cell and interfrontal septal cell were identified in 30 sides (31%), 7 sides (7%) and 7 patients (14%) respectively. CONCLUSIONS: The result characterized normal frontal recess pneumatization in Chinese. That, together with the variations of the uncinate process' superior attachment emphasized the roles of agger nasi cell and the uncinate process in endoscopic frontal sinus surgery.

Adult↗

PubMed2005

[Endoscopic frontal sinus surgery through agger nasi cell approach].

OBJECTIVE: To evaluate the access to the frontal recess by identifying the agger nasi cell and uncinate process. METHODS: Forty-seven patients (85 sides) who underwent endoscopic frontal sinus surgery in our department constituted the study population. Computed tomographic (CT) scans of the sinuses were obtained in coronal and axial views. The frontal ostium was identified by using agger nasi cell approach or identifying the uncinate process. RESULTS: The frontal sinus ostium was identified in 100% of patients (85 sides). After an average follow-up of 9 months, 41 sides of 49 sides (84%) had endoscopically healed sinuses by using agger nasi cell approach. And 21 sides of 36 sides (81%) had endoscopically healed sinuses by identifying the uncinate process. CONCLUSIONS: The agger nasi cell approach to the frontal recess gives an access and allows identification of the frontal ostium. In addition, it provides direct visualization with a 0 degree endoscope into the frontal recess.

Adult↗

PubMed2005

[Anatomical and computed tomographic analysis of the interaction between uncinate process and agger nasi cells].

OBJECTIVE: To investigate the anatomical interaction between uncinate process and agger nasi cell to better understand the anatomy of the frontal sinus drainage pathway by endoscopy, spiral computed tomography (CT) and sectioning. METHODS: Twenty-one skeletal skulls (forty-two sides) and one cadaver head (two sides) were studied by spiral CT together with endoscopy and collodion embedded thin sectioning at coronal plane. The sections with the thickness of 100 microm were stained with hemotoxylin and eosin. RESULTS: Under endoscopy, a leaflet of bone to the middle turbinate, which is given off by uncinate process, forms the anterior insertion of the middle turbinate onto the lateral nasal wall. The middle portion of the uncinate process attached to the frontal process of the maxilla in all of the skeletal nasal cavities, as well as the lacrimal bone in 78.6% of the skeletal nasal cavities. On CT scans, the agger nasi cell is present in 90.5% of the skeletal nasal cavities. While the lateral wall of the agger nasi cell is formed by lacrimal bone, the medial wall of the agger nasi cell is formed by uncinate process. And the anterior wall is formed by the frontal process of the maxilla. The superior portion of the uncinate process forms the medial, posterior and top wall of the agger nasi cells. The superior portion of the uncinate extends into the frontal recess and may insert into lamina papyracea (33.3%), skull base (9.5%), middle turbinate, combination of these (57.2%). CONCLUSIONS: The agger nasi cell is the key that unlocks the frontal recess.

Adult↗

PubMed2004

[Imaging-navigated endoscopic sinus surgery].

OBJECTIVE: To evaluate the advantages and disadvantages of different type of image-guidance system in endoscopic sinus surgery. METHODS: Fifty-three endoscopic sinus surgery were performed under different type of image-guidance system, there were 24 chronic sinusitis with or without nasal polyp, 4 juvenile nasopharyngeal angiofibroma, 8 pituitary adenoma, 9 ethmoid ossifying fibroma, 2 nasopharyngeal mixed tumor, 1 nasal leiomyoma, 3 fungal sinusitis, and 2 inverting papilloma. RESULTS: In all cases, the preoperative time was 15-30 minutes, the registration rate were 1.3-2.0, the localization accuracy was within 1 mm. Compared with the traditional endoscopic sinus surgery, the operating time was similar, without obvious difference. No complication occurred. CONCLUSION: All types of image-guidance system could work well with endoscopic system, each of them had its own shortages. Every type of image-guidance system could identify the borders and critical anatomical structures in the corresponding CT data, especially in cases in which anatomical landmarks were no longer present, with anatomical variation, intranasal and anterior skull base tumor. Combined with endoscopic surgery, the image-guided endoscopic surgery provided accurate tumor resection while preserving normal tissue, increased surgical effectiveness, decreased overall surgical complications. It is believed that the image-guidance system is a useful tool for endoscopic sinus surgery.

Adolescent↗

PubMed2003

[Surgery of ossifying fibroma of the sinuses].

OBJECTIVE: To explore the different surgical choices for treating the ossifying fibroma of the sinuses. To summarize the management and characteristics of each surgical operation. METHODS: A retrospective evaluation of thirty-five patients with ossifying fibroma of the sinuses from August 1994 to July 2001 was presented. RESULTS: Among 22 patients operated by nasal endoscopic management, complete ossifying fibroma removed was achieved in 8 cases, and the majority part of tumor removed in 14 cases. Six patients were operated through a lateral rhinotomy with radical operation in 4 cases. Five ossifying fibromas were removed with a coronal incision. Two cases underwent Caldwell-Luc' surgery. The clinical symptoms, location of ossifying fibroma, and surgical procedures were analyzed. All patients outcomes were successful, no serious complication from the surgical technique occurred. Thirty-three cases were followed-up for 1 to 8 years with an average of three and half years. Fourteen patients had no recurrence, fourteen cases lived with the remains of ossifying fibroma, and five cases recurred. CONCLUSIONS: The choice of surgical operations on ossifying fibroma of the sinuses was mainly decided by the location of ossifying fibroma, in the meanwhile, the organ function, the cosmetology, the surgical degree of difficulty, and the doctor's experience were taken into account.

Adolescent↗