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Treatment Result of KTP Laser Nasopharyngectomy in Recurrent NPC Patients

The recruitment status of this study is unknown. The completion date has passed and the status has not been verified in more than two years.
Verified August 2006 by National Taiwan University Hospital.
Recruitment status was:  Recruiting
ClinicalTrials.gov Identifier:
First Posted: August 16, 2006
Last Update Posted: August 16, 2006
The safety and scientific validity of this study is the responsibility of the study sponsor and investigators. Listing a study does not mean it has been evaluated by the U.S. Federal Government. Read our disclaimer for details.
Information provided by:
National Taiwan University Hospital
Investigate the treatment result of KTP laser nasopharyngectomy in recurrent NPC patients

Recurrent Nasopharyngeal Carcinoma

Study Type: Observational
Study Design: Observational Model: Defined Population
Observational Model: Natural History
Time Perspective: Longitudinal
Time Perspective: Retrospective

Resource links provided by NLM:

Further study details as provided by National Taiwan University Hospital:

Estimated Enrollment: 20
Study Start Date: April 2006
Estimated Study Completion Date: June 2006
Detailed Description:

Nasopharyngeal carcinomas (NPCs) are highly radiosensitive tumors, and the primary treatment of NPCs is radiotherapy.1 Because most patients who have NPC are at advanced stages when initially seen, local failures in terms of persistence or recurrence are not infrequent after primary radiotherapy.2,3 Local regional relapse without the presence of distant failure can still be salvaged and should be aggressively treated. Tumors relapsing in the nasopharynx can be salvaged using either re-irradiation or surgical techniques.1 Although re-irradiation to the recurrent tumor can extent the 5-year actuarial survival rate, it is associated with high morbidity. 4-6 Traditional nasopharyngectomy has been associated with local control rates on the order of 40%~50%, but it has also been associated with complications such as palatal defects, trismus, facial scarring, osteomyelitis, etc.7-10 That is the reason why surgeons continue searching for new methods for performing nasopharyngectomies with lower morbidities.

Nasopharyngectomies are difficult to perform because of the inaccessibility of the nasopharynx. More difficulties are encountered in performing a nasopharyngectomy through the nose due to the restricted surgical field. With advances in techniques of endoscopy and application of the potassium-titanyl-phosphate (KTP) laser in surgery, pathologic lesions located either at the choanal margin or in the nasopharynx can easily be managed with instruments inserted via the nasal cavities. The surgical technique had been accepted by the authority journal. This time, we will review the therapeutic result of KTP-laser nasopharyngectomy in patients with recurrent NPC.


Information from the National Library of Medicine

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Ages Eligible for Study:   20 Years to 75 Years   (Adult, Senior)
Sexes Eligible for Study:   All
Accepts Healthy Volunteers:   No

Inclusion Criteria:

  • recurrent NPC patients

Exclusion Criteria:

  • patients with distant metastasis
  Contacts and Locations
Information from the National Library of Medicine

To learn more about this study, you or your doctor may contact the study research staff using the contact information provided by the sponsor.

Please refer to this study by its ClinicalTrials.gov identifier (NCT number): NCT00364962

Contact: Ching-Ting Tan, MD, PhD 886-2-23123456 ext 5222 christin@ha.mc.ntu.edu.tw

National Taiwan University Hospital Recruiting
Taipei, Taiwan
Contact: Ching-Ting Tan, MD, PhD    886-2-23123456 ext 5222    christin@ha.mc.ntu.edu.tw   
Sponsors and Collaborators
National Taiwan University Hospital
Principal Investigator: Ching-Ting Tan, MD, PhD National Taiwan University Hospital
  More Information

ClinicalTrials.gov Identifier: NCT00364962     History of Changes
Other Study ID Numbers: 9561703040
First Submitted: August 15, 2006
First Posted: August 16, 2006
Last Update Posted: August 16, 2006
Last Verified: August 2006

Keywords provided by National Taiwan University Hospital:
KTP laser

Additional relevant MeSH terms:
Nasopharyngeal Neoplasms
Pharyngeal Neoplasms
Otorhinolaryngologic Neoplasms
Head and Neck Neoplasms
Neoplasms by Site
Nasopharyngeal Diseases
Pharyngeal Diseases
Stomatognathic Diseases
Otorhinolaryngologic Diseases