The Experts below are selected from a list of 231 Experts worldwide ranked by ideXlab platform
Joo-heon Yoon - One of the best experts on this subject based on the ideXlab platform.
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Surgical Anatomy of the Nasofrontal Duct: Anatomical and Computed Tomographic Analysis
The Laryngoscope, 2001Co-Authors: Kyung-su Kim, Hyun Kim, In Hyuk Chung, Jeung-gweon Lee, In Yong Park, Joo-heon YoonAbstract:Objectives Although complete anatomical knowledge of the Nasofrontal Duct has been of great importance, little is known about it. The aim of this study is to examine the drainage site of the Nasofrontal Duct and to investigate the anatomical boundaries of the Nasofrontal Duct according to the drainage site. Study Design One hundred sagittally divided adult head specimens were analyzed by computed tomography and dissection under the surgical microscope. Methods Computed tomography scans of 50 adult cadaver heads were taken sagittally at 1-mm intervals and coronally at 3-mm intervals to find the Nasofrontal Duct. One hundred specimens, made up of sagittally divided adult cadaver heads, were dissected under the microscope to study the structure of the Nasofrontal Duct. Results We identified the anterior, posterior, medial, and lateral boundaries of the Nasofrontal Duct. In the most common type, the superior portion of the uncinate process formed the anterior border and the superior portion of the bulla ethmoidalis formed the posterior border of the Nasofrontal Duct. The conchal plate formed the medial border and the suprainfundibular plate formed the lateral border of the Nasofrontal Duct. Other variations are described in detail. Conclusions To widen the Nasofrontal communication, removing the upper portion of the ground lamella of the ethmoid bulla, which is the posterior boundary of the Nasofrontal Duct, with cutting forceps seems to be a safe and easy method.
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Surgical anatomy of the Nasofrontal Duct: anatomical and computed tomographic analysis.
The Laryngoscope, 2001Co-Authors: Kyung-su Kim, In Hyuk Chung, Jeung-gweon Lee, In Yong Park, H U Kim, Joo-heon YoonAbstract:Although complete anatomical knowledge of the Nasofrontal Duct has been of great importance, little is known about it. The aim of this study is to examine the drainage site of the Nasofrontal Duct and to investigate the anatomical boundaries of the Nasofrontal Duct according to the drainage site. One hundred sagittally divided adult head specimens were analyzed by computed tomography and dissection under the surgical microscope. Computed tomography scans of 50 adult cadaver heads were taken sagittally at 1-mm intervals and coronally at 3-mm intervals to find the Nasofrontal Duct. One hundred specimens, made up of sagittally divided adult cadaver heads, were dissected under the microscope to study the structure of the Nasofrontal Duct. We identified the anterior, posterior, medial, and lateral boundaries of the Nasofrontal Duct. In the most common type, the superior portion of the uncinate process formed the anterior border and the superior portion of the bulla ethmoidalis formed the posterior border of the Nasofrontal Duct. The conchal plate formed the medial border and the suprainfundibular plate formed the lateral border of the Nasofrontal Duct. Other variations are described in detail. To widen the Nasofrontal communication, removing the upper portion of the ground lamella of the ethmoid bulla, which is the posterior boundary of the Nasofrontal Duct, with cutting forceps seems to be a safe and easy method.
Charles W. Gross - One of the best experts on this subject based on the ideXlab platform.
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Modified transnasal endoscopic Lothrop procedure: further considerations.
The Laryngoscope, 1995Co-Authors: Daniel G. Becker, David F. Moore, William H. Lindsey, William E. Gross, Charles W. GrossAbstract:The Lothrop procedure resects the medial frontal sinus floor, superior nasal septum, and intersinus septum to create a large frontonasal communication. However, the external approach often allowed medial collapse of soft tissue and stenosis of the Nasofrontal communication. We describe a modified transnasal endoscopic Lothrop procedure in which drills are used for cases in which frontal recess exploration fails to relieve obstruction of the frontal sinus. The lateral bony walls are preserved, and medial collapse does not occur. The mucosa of the posterior table and posterior Nasofrontal Duct is preserved, and a single common frontal opening is created. We have found this approach to be safe and reliable. Fourteen patients have undergone this procedure without complication, achieving resolution or improvement of their symptoms and maintaining wide patency of the frontonasal opening. We recognize that long-term follow-up will be required but remain encouraged with our favorable results to date.
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Modified transnasal endoscopic lothrop procedure: Frontal drillout
Operative Techniques in Otolaryngology-Head and Neck Surgery, 1995Co-Authors: Charles W. Gross, William E. Gross, Daniel G. BeckerAbstract:The Lothrop procedure resects the medial frontal sinus floor, superior nasal septum, and intersinus septum, creating a large frontonasal communication. However, the external approach often allows medial collapse of soft tissue and stenosis of the frontonasal communication. We describe a modified transnasal endoscopic Lothrop procedure, using drills for cases in which frontal recess exploration has failed to relieve obstruction of the frontal sinus. The lateral bony walls are preserved, and medial collapse does not occur. The mucosa of the posterior table and posterior Nasofrontal Duct is preserved, and a single common frontal opening is created. We have found this approach to be safe and reliable. Fourteen patients have undergone this procedure without complication, achieving resolution or improvement of their symptoms and maintaining wide patency of the frontonasal opening. We recognize that long-term follow-up will be required, but remain encouraged by our favorable results to date.
Kyung-su Kim - One of the best experts on this subject based on the ideXlab platform.
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Surgical Anatomy of the Nasofrontal Duct: Anatomical and Computed Tomographic Analysis
The Laryngoscope, 2001Co-Authors: Kyung-su Kim, Hyun Kim, In Hyuk Chung, Jeung-gweon Lee, In Yong Park, Joo-heon YoonAbstract:Objectives Although complete anatomical knowledge of the Nasofrontal Duct has been of great importance, little is known about it. The aim of this study is to examine the drainage site of the Nasofrontal Duct and to investigate the anatomical boundaries of the Nasofrontal Duct according to the drainage site. Study Design One hundred sagittally divided adult head specimens were analyzed by computed tomography and dissection under the surgical microscope. Methods Computed tomography scans of 50 adult cadaver heads were taken sagittally at 1-mm intervals and coronally at 3-mm intervals to find the Nasofrontal Duct. One hundred specimens, made up of sagittally divided adult cadaver heads, were dissected under the microscope to study the structure of the Nasofrontal Duct. Results We identified the anterior, posterior, medial, and lateral boundaries of the Nasofrontal Duct. In the most common type, the superior portion of the uncinate process formed the anterior border and the superior portion of the bulla ethmoidalis formed the posterior border of the Nasofrontal Duct. The conchal plate formed the medial border and the suprainfundibular plate formed the lateral border of the Nasofrontal Duct. Other variations are described in detail. Conclusions To widen the Nasofrontal communication, removing the upper portion of the ground lamella of the ethmoid bulla, which is the posterior boundary of the Nasofrontal Duct, with cutting forceps seems to be a safe and easy method.
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Surgical anatomy of the Nasofrontal Duct: anatomical and computed tomographic analysis.
The Laryngoscope, 2001Co-Authors: Kyung-su Kim, In Hyuk Chung, Jeung-gweon Lee, In Yong Park, H U Kim, Joo-heon YoonAbstract:Although complete anatomical knowledge of the Nasofrontal Duct has been of great importance, little is known about it. The aim of this study is to examine the drainage site of the Nasofrontal Duct and to investigate the anatomical boundaries of the Nasofrontal Duct according to the drainage site. One hundred sagittally divided adult head specimens were analyzed by computed tomography and dissection under the surgical microscope. Computed tomography scans of 50 adult cadaver heads were taken sagittally at 1-mm intervals and coronally at 3-mm intervals to find the Nasofrontal Duct. One hundred specimens, made up of sagittally divided adult cadaver heads, were dissected under the microscope to study the structure of the Nasofrontal Duct. We identified the anterior, posterior, medial, and lateral boundaries of the Nasofrontal Duct. In the most common type, the superior portion of the uncinate process formed the anterior border and the superior portion of the bulla ethmoidalis formed the posterior border of the Nasofrontal Duct. The conchal plate formed the medial border and the suprainfundibular plate formed the lateral border of the Nasofrontal Duct. Other variations are described in detail. To widen the Nasofrontal communication, removing the upper portion of the ground lamella of the ethmoid bulla, which is the posterior boundary of the Nasofrontal Duct, with cutting forceps seems to be a safe and easy method.
Judith M. Czaja - One of the best experts on this subject based on the ideXlab platform.
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Nasofrontal Duct Reconstruction With Silicone Rubber Sheeting for Inflammatory Frontal Sinus Disease: Analysis of 164 Cases
The Laryngoscope, 1996Co-Authors: Finn R. Amble, Eugene B. Kern, H. Bryan Neel, George W. Facer, Thomas J. Mcdonald, Judith M. CzajaAbstract:The authors reviewed their experience in reconstructing the Nasofrontal Duct with thin silicone rubber sheeting in patients who had chronic inflammatory frontal sinus disease. The 164 patients were divided into four groups. The patients in group 1 had the traditional modified Lynch procedure, while those in group 2 had certain technical variations of the modified Lynch operation. The patients in the other two groups had major technical variations: those in group 3 had a primary osteoplastic flap approach and those in group 4 had revisions of failed osteoplastic flap with fat obliteration operations. Surgical indications included mucopyocele (87 patients), chronic frontal sinusitis (71 patients), osteomyelitis (2 patients), acute sinusitis (2 patients), and subacute sinusitis (2 patients). Follow-up averaged 47 months. At their last clinic visit, 157 patients (96%) were asymptomatic. Forty-six revision procedures were performed in 30 patients (18% of initial cases). There were no major complications. Nasofrontal Duct reconstruction using thin silicone rubber sheeting is technically straightforward, safe, and effective.
Daniel G. Becker - One of the best experts on this subject based on the ideXlab platform.
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Modified transnasal endoscopic Lothrop procedure: further considerations.
The Laryngoscope, 1995Co-Authors: Daniel G. Becker, David F. Moore, William H. Lindsey, William E. Gross, Charles W. GrossAbstract:The Lothrop procedure resects the medial frontal sinus floor, superior nasal septum, and intersinus septum to create a large frontonasal communication. However, the external approach often allowed medial collapse of soft tissue and stenosis of the Nasofrontal communication. We describe a modified transnasal endoscopic Lothrop procedure in which drills are used for cases in which frontal recess exploration fails to relieve obstruction of the frontal sinus. The lateral bony walls are preserved, and medial collapse does not occur. The mucosa of the posterior table and posterior Nasofrontal Duct is preserved, and a single common frontal opening is created. We have found this approach to be safe and reliable. Fourteen patients have undergone this procedure without complication, achieving resolution or improvement of their symptoms and maintaining wide patency of the frontonasal opening. We recognize that long-term follow-up will be required but remain encouraged with our favorable results to date.
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Modified transnasal endoscopic lothrop procedure: Frontal drillout
Operative Techniques in Otolaryngology-Head and Neck Surgery, 1995Co-Authors: Charles W. Gross, William E. Gross, Daniel G. BeckerAbstract:The Lothrop procedure resects the medial frontal sinus floor, superior nasal septum, and intersinus septum, creating a large frontonasal communication. However, the external approach often allows medial collapse of soft tissue and stenosis of the frontonasal communication. We describe a modified transnasal endoscopic Lothrop procedure, using drills for cases in which frontal recess exploration has failed to relieve obstruction of the frontal sinus. The lateral bony walls are preserved, and medial collapse does not occur. The mucosa of the posterior table and posterior Nasofrontal Duct is preserved, and a single common frontal opening is created. We have found this approach to be safe and reliable. Fourteen patients have undergone this procedure without complication, achieving resolution or improvement of their symptoms and maintaining wide patency of the frontonasal opening. We recognize that long-term follow-up will be required, but remain encouraged by our favorable results to date.
