Mafi, Negar;Kadivar, Maryam;Hosseini, Niloufar;Ahmadi, Sara;Zare-Mirzaie, Ali
Asian Pacific Journal of Cancer Prevention
/
v.13
no.7
/
pp.3373-3378
/
2012
Background: Head and neck squamous cell carcinoma (HNSCC) is the 8th most common cancer worldwide. Although older age, male gender, smoking and alcohol consumption are known risk factors, an increasing number of HNSCC patients are without typical risk factors. Our aim was to define demographics of HNSCC in Iran and the potential risk factors related to Iranian ethnicity and lifestyle. Methods: We conducted a cross-sectional analytical study on 262 patients with primary SCC of the larynx, hypopharynx or tongue referred to our pathology department during 1995-2010. Patients' demographics, tumor characteristics and risk factors such as smoking, alcohol consumption and anemia were analyzed and compared in two groups of patients: over 40 years (older group) and 40 years or less (young group); Chi-square and Mann-Whitney analytical tests were employed. Results: 5.7% of patients were young adults. The male to female ratio was 1.5 in the younger group and 5.6 in the older group. In young adults, 40% of tumors were located in larynx and 40% in the tongue. Age >40 was significantly associated with laryngeal location (P<0.001). History of smoking and drinking was significantly associated with age >40 and SCC of larynx in both age groups. Cervical lymph node involvement was significantly correlated with SCC of tongue (P<0.001), however, considering young adults only, SCC of hypopharynx was most frequently accompanied by lymph node involvement (60%). The most prevalent tumor among men was SCC of larynx whereas SCC of hypopharynx was the most prevalent tumor among women (61%), of whom 18.2% were ${\leq}40$. Conclusions: The incidence of HNSCC among young adults seems to be higher in Iran compared to other countries. Reduction in exposure to known risk factors, especially tobacco smoking in forms of cigarettes and bubble pipes, and search for other causative agents of HNSCC in young population is recommended.
Park Ki-Min;Kang Hyung-Kil;Kim Lee-Su;Lee Bong-Hwa
Korean Journal of Head & Neck Oncology
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v.13
no.2
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pp.213-220
/
1997
Background: Thyroid cancer is a relatively rare neoplasm and its incidence varies geographically and ethnically around the world. Thyroid cancer is the most common endocrine malignancy, but it has a wide spectrum of biologic behavior, histologic appearance, and management. Purpose: The purpose of the study was to analyse and evaluate all aspects of the clinical consideration in thyroid cancer. Method: Between 1986 and 1995, a retrospective analysis of 77 thyrod cancer patients admitted at the Department of Surgery, Hangang Sacred Heart Hospital, Hallym University was made to assess clinical entities. Result: By the pathological classification, the papillary carcinoma was the most common type(83.1%). Male to female ratio was 1 : 5.4 and most prevalent age group was noted from fourth decade to fifth decade(46.8%). The most common duration of illness between the appearance of the symptoms and the treatment was below 6 months(44.2%), and the most common symptom was the palpable mass at the anterior portion of the neck(96.1%). Most cases of the thyroid cancer were appeared as cold nodule in the $^{99m}$Tc-thyroid scan(95.7%). In the site of tumor location, the right and left lobe was distributed similarly. In the extent of tumor, incidence of intrathyroidal location was 41.6%, and that of the metastasis to the cervical lymph nodes was 44.2% and that of the direct capsular invasion was 27.3%, and incidence of both involved case was 13%. Surgical procedures were total thyroidectomy alone in 27 cases(35.1%) or with modified neck dissection in 6 cases(7.8%), or with radical neck dissection in 2 cases (2.6%), near total thyroidectomy alone in 22 cases(28.6%), ipsilateral lobectomy with isthmectomy alone in 12 cases(15.6%) or with modified neck dissection in 1 case(1.3%), and biopsy only in 7 cases(9.1%). The most common postoperative complications were transient hypoparathyroidism(5.2%) and transient unilateral recurrent laryngeal nerve paralysis(5.2%). Conclusion: The major problem of management of thyroid cancer include a wide spectrum of clinical behaviour of this tumor entity, the lack of reliable prognostic factors and lack of an objective assessment of the various treatment modalities. But because of showing the favorable prognosis for most thyroid cancer, appropriate and aggressive management should be recommended.
Background: Previous studies evaluating the association between the xeroderma pigmentosum group G (XPG) Asp1104His polymorphism and head and neck cancer susceptibility have proven controversial. This meta-analysis of the literature was performed to obtain a more precise estimation of the relationship. Materials and Methods: We systematically searched PubMed, Embase and Web of Science with a time limit of Dec 18, 2014. Odds ratios (ORs) with 95% confidence intervals (CIs) were used to assess the strength of any association. Results: We performed a meta-analysis of eight published case-control studies, including 3,621 cases and 5,475 controls. Overall, no significant association was found between the XPG Asp1104His polymorphism and head and neck cancer susceptibility under all genetic models. In the subgroup analysis by ethnicity, the XPG Asp1104His polymorphism had statistically significant association with elevated head and neck cancer risk under CC vs GG (OR=1.24, 95% CI=1.00~1.54) and the recessive model (OR=1.22, 95%CI=1.01~1.46) in Asian populations. A similar result was found under CC vs GG (OR =1.22, 95%CI=1.01~1.47) in the population based subgroup by source of control. When performed by tumor site, the XPG Asp1104His polymorphism had statistically significant association with elevated laryngeal cancer under all genetic models (CC vs GG: OR=1.59, 95% CI=1.16~2.19; GC vs GG: OR=1.38, 95%CI=1.10~1.72; dominant model: OR=1.42, 95% CI=1.15~1.74; recessive model: OR=1.36, 95% CI=1.02~1.81). Conclusions: This meta-analysis suggested that the XPG Asp1104His polymorphism is a risk factor for head and neck cancer susceptibility, especially for laryngeal cancer and in Asian populations.
Purpose:To know the results after induction chemotherapy followed by curative radiation therapy for locally advanced hypopharyngeal cancer Methods and Materials:From August 1990 to December 2003, forty patients who were treated with induction chemotherapy and curative radiation therapy were analyzed retrospectively. Median age of patients was 60 years(range:40-78 years) and clinical stage was wholly stage 3 or 4. Induction chemotherapy used cisplatin with 5-FU or docetaxel, and its interval was 3 weeks. Irradiated radiation dose was 70 to 78Gy (median:70.8Gy). Results:Median follow-up time was 39.4 months(range:8-115 months). Treatment failures were observed in 52.5% patients, and main failure pattern was local recurrence in 16 patients. 3 and 5 year disease free survival were 52.6%, 48.2% respectively and values of overall survival were 60.0, 43.9% and median survival time was 44.7 months. Treatment response was only a prognostic factor for survival. Laryngeal preservation was observed in twenty-four(60.0%) patients. Conclusion:Initial primary tumor stage was a significant prognostic factor for laryngeal preservation, and response after radiation therapy was a prognostic factor for long-term survival after induction chemotherapy followed by curative radiation therapy for locally advanced hypopharyngeal cancer.
Purpose: In supraglottic cancer, radiation therapy is used to preserve the laryngeal function but combined surgery and radiation therapy is required in advanced stage. The authors Present the results of radiation therapy alone and combined surgery Plus Postoperative radiation therapy for supraglottic cancer. Methods and Materials: A retrospective analysis was done for 43 patients with squamous cell carcinoma of the supraglottic larynx who were treated from Feburary 1982 to December 1991, in the Department of Radiation Oncology, Korea University Hospital. Patient distribution according to the AJCC staging system was as follows: I, 3($7.0\%$); II, 7($16.3\%$); III, 17($39.5\%$); IV, 16($37.2\%$). Patients' age ranged from 30 to 72 years(median 62). Follow up durations were from 21 to 137 months(median 27). Seventeen patients($39.5\%$) were treated by radiation therapy alone with radiation doses of 6840-7380 cGy and 26 patients($60.5\%$) were treated with surgery plus postoperative irradiation with doses of 5820-6660 cGy. Results: Overall five-year survival rate for all stage was $51.8\%$, with $100\%$ for Stage I and II, $47.3\%$ for Stage III, and $29.2\%$ for Stage III. The difference of the survival rate by stage was statistically significant(p=0.0152). Five-year survival rates were $100\%$ for locally confined tumor in the supraglottic larynx, $37.5\%$ for transglottic extension, $26.7\%$ for hypopharynx extension, and only two of 5 patients with both transglottic and hypopharynx extension were alive(p=0.0033). Five-year survival rates by neck node status were as follows: $55.0\%$ for NO, $64.3\%$ for N1, $50.0\%$ for N2, and all 2 of N3 were died of disease. Overall survival rate for radiation therapy alone group was $42.8\%$, and it was $56.7\%$ for surgery plus postoperative radiation therapy group with no statistically significant difference(p=0.5215). In Stage I and II, all Patients survived. In Stage III and IV, 5-year survival rate for radiation therapy alone group was $28.5\%$ and $43.4\%$ for surgery plus postoperative irradiation group(p=0.5103). Local control rate was $58.8\%$(10/17) for radiation therapy alone group and $73.1\%$ (19/26) for surgery plus postoperative irradiation group. Three patients from surgery plus postoperative radiation therapy group developed distant metastasis in lungs. Conclusion: Treatment results of radiation therapy alone was excellent in early stage supraglottic cancer. In advanced stage, even the difference was statistically not significant, the result of postoperative radiation therapy group was superior compared with radiation therapy alone group. Since 1992, concomitant chemoradiotherapy with hyperfractionated radiotherapy is being used to improve the result of the treatment and preserve the laryngeal function in advanced stage supraglottic cancer.
Papilloma is the common benign tumor of the larynx and the incidence of its malignant change was variable. The authors recently experienced 2 cases of squamous cell carcinoma of the larynx which were considered to be transformed from laryngeal papilloma. Case 1. A 58 year old male patient visited O.P.D. of Department of Otolaryngology of Busan National University Hospital, because of hoarseness for 3 years on May 13th, 1980. At that time, local finding of indirect laryngoscopy revealed whitish hypertrophic papillomatous mass on both vocal cords and anterior commissure, and dirty gray white pseudomembrane on left aryepiglottic fold, and the result of biopsy was squamous cell papilloma. So the laryngeal papilloma was removed under suspension laryngoscopy and then he had no specific treatment in spite of being recommended 5-FU topical spray. On March 5th, 1981, he visited O.P.D. again because of progressive exacerbation of hoarseness with mild dyspnea and histopathological finding was revealed squamous cell carcinoma of the larynx. Seven days later from that day, he visited emergency room due to severe dyspnea, and emergency tracheostomy was performed on sitting position. On April 7th 1981, total laryngectomy was performed successfully and postoperative irradiation therapy was recommended. Case 2. A 47 year old male patient visited our O.P.D. because of hoarseness for 5 years on Sep. 27, 1978. At that time, local finding of indirect laryngoscopy revealed papillomatous mass on left vocal cord and left ventricle and result of biopsy was squamous cell papilloma. So he had been treated with 11 times removal of papilloma, topical spray of 5-Fu and estrogen for 3 years, but the papilloma had been recurred. On Sep. 9th, 1981, he visited O.P.D. because of severe dyspnea and emergency tracheostomy and biopsy was performed. The result of biopsy was squamous cell carcinoma of larynx and total laryngectomy was performed successfully.
The use of phonosurgery in the recent development of laryngomicrosurgery has enabled the restoration of a normal voice in respect to functional laryngeal surgery which in Korea in the past limited to simple removal of benign laryngeal tumor such as laryngeal polyp or nodules and cordal injection of $Teflon^{{\circledR}}$ for the treatment of recurrent nerve paralysis under the vision of suspension laryngoscopy. Performance of phonosurgery for the treatment of cord paralysis, mutational dysphonia, vocal cord atrophy, hyperkinetic dysphonia and sulcus vocalis is a happy event in the view point of development of phonosurgery in Korea. In this aspect thyroplasty to change the position and physical characteristics of the cord outside the glottis instead of the direct handling of the vocal cord through direct endoscopy is popular. Among the 4 types of thyroplasty, classified by Insshiki(1974), type I thyroplasty(1ateral compression of vocal cord) and type IV thyroplasty(lengthening of vocal cord) were effective in the treatment of unilateral vocal cord paralysis. Advantages of this operation are the fine adjustment of the degree of lateral compression under local anesthesia according to the phonation of the patient during operation and avoidance of dyspnea and intralaryngeal hemorrhage due to the manipulation outside the internal perichondrium of the thyroid cartilage. We did 7 cases of thyroplasty for the treatment of unilateral vocal cord paralysis in the 7 months from September 1981 to March 1982. Before the operation aerodynamic study, psychoacoustical evaluation, stroboscopy and sound spectrographic analysis were done. Two months after the operation the above procedures were performed again. Results of preoperative and postoperative examination were compared and the following results were obtained. 1) In the aerodynamic study, maximum phonation time increased to 158% of the preoperative value and the phonation quotient and the mean flow rate decreased to 58% and 54% of preoperative values. 2) The degree of hoarseness improved in the psychoacoustical evaluation and the glottic chink during phonation was decreased in the stroboscopic examiantion. 3) In the sound spectrographic analysis, periodicity was much restored and noise distribution decreased especially in the high frequency area.
Neck dissection has become an integral part of the staging and management of head and neck tumors. This paper reports a series of head and neck patients who had pathological findings in their neck dissection specimens, which were unrelated to their primary tumors. In 7 cases, there was unexpected pathology in the cervical lymph nodes which was not related to the primary tumor. Four cases were squamous cell carcinomas and 3 were thyroid carcinomas. In 3 cases of squamous cell carcinomas, there were no evidence of metastatic squamous cell carcinoma in neck dissection specimen; however, the lymph nodes were found to be involved by metastatic papillary carcinoma in one larynx cancer, metastatic adenocarcinoma in the other larynx cancer, tuberculosis in one nasopharynx cancer. In three of neck dissection specimen of carcinoma(two thyroid carcinomas, one laryngeal carcinoma), dual nodal pathology was found: Each of these specimen contained carcinoma with tuberculosis of the lymph nodes in three cases. In one thyroid carcinoma, there was no evidence of metastasis; however, the lymph nodes were found to be involved by tuberculosis. Preoperative assessment did not reveal any findings to alert us to the possibility of a synchronous pathological process in the cervical nodes of this group of 7 patients. In particular, there was no evidence of active pulmonary tuberculosis in the 5 patients with active lymph node disease.
Objectives: To evaluate accuracy of FDG-PET CT in prediction of persistent disease in head and neck cancer cases and to determine prognostic value of metabolic tumor response. Materials and Methods: Between 2009 and 2011, 46 patients with squamous cell carcinoma of head and neck receiving PET-CT were treated with definitive radiotherapy, with or without chemotherapy. There were 29 nasopharyngeal, 11 hypopharyngeal, 3 oropharyngeal and 3 laryngeal cancer patients, with a median age of 50.5 years (range 16-84), 32 males and 14 females. All patients were evaluated with PET-CT median 3-5 months (2.4-9.4) after completion of radiotherapy. Results: After a median 20 months of follow up, complete metabolic response was observed in 63% of patients. Suspicious residual uptake was present in 10.9% and residual metabolic uptake in 26.0% of patients. The overall sensitivity, specificity, positive predictive value and negative predictive value of FDG-PET-CT for detection of residual disease was 91% and 81%, 64% and 96% respectively. Two year LRC was 95% in complete responders while it was 34% in non-complete responders. Conclusions: FDG PET CT is a valuable tool for assessment of treatment response, especially in patients at high risk of local recurrence, and also as an indicator of prognosis. Definitely more precise criteria are required for assessment of response, there being no clear cut uptake value indicating residual disease. Futhermore, repair processes of normal tissue may consume glucose which appear as increased uptake in control FDG PET CT.
Kim, Seong Dong;Yi, Yeo-Jeen;Kim, Min-Soo;Jeong, Woo-Jin;Ahn, Soon-Hyun
Korean Journal of Head & Neck Oncology
/
v.30
no.2
/
pp.39-42
/
2014
Background and Objectives : Pharyngocutaneous fistula is the most common complication after total laryngectomy. The objective of this study was to determine the incidence of pharyngocutaneous fistula after total laryngectomy in patients operated on in our department and to establish whether specific factors predispose to fistula formation. Materials and Methods : For 10 years(2003-2014), 49 cases of patients who were diagnosed with laryngeal cancer and underwent total laryngectomy in our department. Patients who underwent radiotherapy before the surgery was 24 cases(48.9%) of all total laryngectomy patients. And those who were needed flap reconstruction because of extensive tumor involvement to hypopharynx were also 24 cases(48.9%), whereas primary closure were performed in 25 cases(51%). Results : The postoperative pharyngocutaneous fistula was found in 12 of the 49 patients(24.5%). The radiotherapy before surgery was a statistically significant factor that increase the incidence of postoperative fistulas(p=0.037). Large extent of surgery including flap reconstruction was almost statistically significant factor of raising postoperative fistula rates(p=0.051). Conclusion : According to this study, the presence of postoperative fistula seems to be influenced by previous radiotherapy and the extent of surgery. These could be the risk factors of pharyngocutaneous fistula after total laryngectomy.
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