Treatment Result of KTP Laser Nasopharyngectomy in Recurrent NPC Patients

The recruitment status of this study is unknown because the information has not been verified recently.
Verified August 2006 by National Taiwan University Hospital.
Recruitment status was  Recruiting
Information provided by:
National Taiwan University Hospital Identifier:
First received: August 15, 2006
Last updated: NA
Last verified: August 2006
History: No changes posted
Investigate the treatment result of KTP laser nasopharyngectomy in recurrent NPC patients

Nasopharyngeal Carcinoma

Study Type: Observational
Study Design: Observational Model: Defined Population
Time Perspective: Longitudinal

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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.


Ages Eligible for Study:   20 Years to 75 Years
Genders Eligible for Study:   Both
Accepts Healthy Volunteers:   No

Inclusion Criteria:

  • recurrent NPC patients

Exclusion Criteria:

  • patients with distant metastasis
  Contacts and Locations
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Please refer to this study by its identifier: NCT00364962

Contact: Ching-Ting Tan, MD, PhD 886-2-23123456 ext 5222

National Taiwan University Hospital Recruiting
Taipei, Taiwan
Contact: Ching-Ting Tan, MD, PhD    886-2-23123456 ext 5222   
Sponsors and Collaborators
National Taiwan University Hospital
Principal Investigator: Ching-Ting Tan, MD, PhD National Taiwan University Hospital
  More Information

No publications provided Identifier: NCT00364962     History of Changes
Other Study ID Numbers: 9561703040
Study First Received: August 15, 2006
Last Updated: August 15, 2006
Health Authority: Taiwan: Department of Health

Keywords provided by National Taiwan University Hospital:
KTP laser

Additional relevant MeSH terms:
Nasopharyngeal Neoplasms
Head and Neck Neoplasms
Nasopharyngeal Diseases
Neoplasms by Site
Otorhinolaryngologic Diseases
Otorhinolaryngologic Neoplasms
Pharyngeal Diseases
Pharyngeal Neoplasms
Stomatognathic Diseases processed this record on November 30, 2015