alexa Exploring the Limits of the Endoscopic Approach to Frontal Sinus Osteoma | Open Access Journals
ISSN: 2161-119X
Otolaryngology: Open Access
Like us on:
Make the best use of Scientific Research and information from our 700+ peer reviewed, Open Access Journals that operates with the help of 50,000+ Editorial Board Members and esteemed reviewers and 1000+ Scientific associations in Medical, Clinical, Pharmaceutical, Engineering, Technology and Management Fields.
Meet Inspiring Speakers and Experts at our 3000+ Global Conferenceseries Events with over 600+ Conferences, 1200+ Symposiums and 1200+ Workshops on
Medical, Pharma, Engineering, Science, Technology and Business

Exploring the Limits of the Endoscopic Approach to Frontal Sinus Osteoma

Nobuo Ohta1*, Yusuke Suzuki1, Takayoshi Waki1, Kazuya Kurakami1, Yasuyuki Hinohira2 and Seiji Kakehata1

1Department of Otolaryngology, Head and Neck Surgery, Faculty of Medicine, Yamagata University, Japan

2Department of Otorhinolaryngology, School of Medicine, Showa University, Japan

Corresponding Author:
Nobuo Ohta
Department of Otolaryngology
Head and Neck Surgery, Faculty of Medicine
Yamagata University 2-2-2 Iida-nishi
Yamagata 990-9585 Japan
Tel: 81-236-28-5380
Fax: 81-236-25-3813
E-mail: [email protected]

Received date: August 09, 2013; Accepted date: August 21, 2013; Published date: August 28, 2013

Citation: Ohta N, Suzuki Y, Waki T, Kurakami K, Hinohira Y, et al. (2013) Exploring the Limits of the Endoscopic Approach to Frontal Sinus Osteoma. Otolaryngology 3:140. doi:10.4172/2161-119X.1000140

Copyright: © 2013 Ohta N, et al. This is an open-access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited.

Visit for more related articles at Otolaryngology: Open Access

Abstract

Objective: We present the case of a frontal sinus osteoma in a 71-year-old Japanese woman who presented with an approximately 2-year history of head dullness.

Case report: CT showed a 45×39 mm radio dense mass extending from the left to the right frontal sinus. Under general anesthesia the mass was removed by endoscopic surgery. Although the tumor was large and extended into both frontal sinuses, the tumor was completely removed, without CSF leakage or orbital complications, by using a modified Lothrop procedure.

Conclusion: A unique osteoma of the frontal sinus is described. The challenges related to surgical treatment of this particular case and similar lesions are addressed.

Keywords

Frontal sinus; Osteoma; Endoscopic approach; Modified Lothrop procedure

Introduction

Frontal sinus osteomas are mostly asymptomatic and slow-growing benign tumors most frequently involving the frontal sinus [1]. The surgical procedures available for osteoma removal can be classified into external, endoscopic, or a combination of both [2]. The external approach is often selected to ensure complete and safe removal of frontal sinus osteoma located close to both orbits [3]. Here, we present the case of a symptomatic frontal sinus osteoma that was successfully removed by using an Endoscopic Modified Lothrop Procedure (EMLP).

Case Report

A 71-year-old Japanese woman was referred to our otolaryngology department with a chief complaint of head dullness for about 2 years. X-ray of the paranasal sinuses at the time revealed left-sided frontal sinus osteoma. The patient was followed up in the ENT department regularly. At the next paranasal X-ray, 6 months after the initial visit, there were radiological changes in the size and shape of the osteoma. Computed tomography revealed a 45×39 mm radio dense mass extending from the left to the right frontal sinus (Figure 1). The mass was removed by endoscopic surgery under general anesthesia. Although the tumor was large and extended into both frontal sinuses, it was removed completely, without CSF leakage and orbital complications, by using EMLP. Magnetic-resonance-imaging integrated neuronavigation was used intraoperatively to facilitate orientation during endoscopy. Multi-angled high-speed intranasal drills and shavers (Medtronic) were used to remove the tumor. The endoscopic drill technique was used to resect the margin of the osteoma, starting at the periphery and moving to the center, which was at risk of fragmentation; the tumor was removed transnasally without damage to the surrounding tissues. The time for operation was 4 and half hours. Histological examination confirmed the diagnosis of osteoid osteoma, since the typical nidus was found in the histological specimen (Figure 2). The patient did well postoperatively, and no recurrence was noticed at a 12-month followup. (Figures 3 and 4).

Figure

Figure 1: Preoperative CT scan shows a bone-density lesion in the right and left frontal sinuses. The bone is expanded, and the cortices are intact.

Figure

Figure 2: Pathological examination shows mature lamellar bone. (Hematoxylin and eosin staining, original magnification×200).

Figure

Figure 3: One year postoperative CT scan shows no bone-density lesion in the right or left frontal sinus. The lamina papyracea is preserved bilaterally.

Figure

Figure 4: This endoscopic view shows the patient one year postoperatively with a nicely healed common opening into both frontal sinuses. #: right middle turbinate, *: nasal septum.

Discussion

The frontal sinus is one of the commonest sites of occurrence of paranasal sinus osteoma. Small, favorably located asymptomatic osteomas can be managed conservatively [1-3]. Osteomas that in the past have required open approaches can now be managed successfully with the endoscopic approach alone or with combined approaches, thus reducing overall morbidity without sacrificing outcome [1-3]. If surgery requires substantial widening of the frontal recess, then the EMLP on its own or combined with an osteoplastic flap should be considered [4-6]. There appears to be a consensus that small, asymptomatic osteomas do not need surgery and a “wait and see” policy can be chosen [1-6]. Indications for surgery are 1) rapid growth of the tumor, 2) the presence of symptoms, 3) chronic rhinosinusitis due to obstruction by the tumor, 4) tumor-related bone erosion or facial deformity, 5) tumor occupying more than 50% of the frontal sinus, 6) tumor causing partial or complete blockage of the frontal recess and 7) the presence of complications [4-6].

The surgical approaches available for osteoma removal are classified into external, endoscopic, or a combination of both [1-3]. Endoscopic frontal sinus procedures can be classified as Draf IIA frontal sinusotomy (removal of all ethmoid cells obstructing frontal sinus drainage, with resection of the floor of the frontal sinus between the lamina papyracea and the middle turbinate) and Draf IIB frontal sinusotomy (resection of the floor of the frontal sinus from the lamina papyracea and the nasal septum) [4-6]. Draf III (also called the EMLP) involves resection of the frontal sinus floor on sides, as well as the superior part of the adjacent nasal septum and the inferior part of the interfrontal septum, thus creating large frontal sinus drainage [4-6]. The time need for complete resection of tumor depends on the procedures and the pathlogical types of osteoma. It is also widely accepted that it takes more time to remove the osteoma transnasally than using osteoplastic flap procedure and spongious type of osteoma is easier to remove compared to ivory osteoma [4-6]. The transnasal approach is not usually indicated with the osteroma(s) located far lateral in the frontal sinus or widely attached to skull base [2-6].

Tumor characteristics, patient factors, availability of appropriate instrumentation, and technical expertise should be taken into account to determine the most appropriate surgical approach.

Conclusion

Appropriate imaging techniques are needed for preoperative diagnosis of frontal sinus osteoma. EMLP can be used successfully to resect frontal sinus osteoma extending completely into the left and right frontal sinuses.

Consent

Written informed consent in Japanese was obtained from the patient for publication of this case report and accompanying images. A copy of the written consent is available for review by the Editor-in-chief of this journal.

Author’s Contributions

Nobuo Ohta used all of the data available and wrote the majority of this report. Yusuke Suzuki was the main consultant surgeon involved in the management of this patient. Yasuyuki Hinohira supplied the principles of surgical information in this article. Takayoshi Waki and Kazuya Kurakami saw the patient in hospital and contributed the case history notes used here. Takayoshi Waki reported on the histopathological findings and provided us with slides. All authors read and approved the final manuscript.

References

Select your language of interest to view the total content in your interested language
Post your comment

Share This Article

Recommended Conferences

Article Usage

  • Total views: 11605
  • [From(publication date):
    September-2013 - Oct 19, 2017]
  • Breakdown by view type
  • HTML page views : 7830
  • PDF downloads :3775
 

Post your comment

captcha   Reload  Can't read the image? click here to refresh

Peer Reviewed Journals
 
Make the best use of Scientific Research and information from our 700 + peer reviewed, Open Access Journals
International Conferences 2017-18
 
Meet Inspiring Speakers and Experts at our 3000+ Global Annual Meetings

Contact Us

Agri, Food, Aqua and Veterinary Science Journals

Dr. Krish

[email protected]

1-702-714-7001 Extn: 9040

Clinical and Biochemistry Journals

Datta A

[email protected]

1-702-714-7001Extn: 9037

Business & Management Journals

Ronald

[email protected]

1-702-714-7001Extn: 9042

Chemical Engineering and Chemistry Journals

Gabriel Shaw

[email protected]

1-702-714-7001 Extn: 9040

Earth & Environmental Sciences

Katie Wilson

[email protected]

1-702-714-7001Extn: 9042

Engineering Journals

James Franklin

[email protected]

1-702-714-7001Extn: 9042

General Science and Health care Journals

Andrea Jason

[email protected]

1-702-714-7001Extn: 9043

Genetics and Molecular Biology Journals

Anna Melissa

[email protected]

1-702-714-7001 Extn: 9006

Immunology & Microbiology Journals

David Gorantl

[email protected]

1-702-714-7001Extn: 9014

Informatics Journals

Stephanie Skinner

[email protected]

1-702-714-7001Extn: 9039

Material Sciences Journals

Rachle Green

[email protected]

1-702-714-7001Extn: 9039

Mathematics and Physics Journals

Jim Willison

[email protected]

1-702-714-7001 Extn: 9042

Medical Journals

Nimmi Anna

[email protected]

1-702-714-7001 Extn: 9038

Neuroscience & Psychology Journals

Nathan T

[email protected]

1-702-714-7001Extn: 9041

Pharmaceutical Sciences Journals

John Behannon

[email protected]

1-702-714-7001Extn: 9007

Social & Political Science Journals

Steve Harry

[email protected]

1-702-714-7001 Extn: 9042

 
© 2008-2017 OMICS International - Open Access Publisher. Best viewed in Mozilla Firefox | Google Chrome | Above IE 7.0 version
adwords