OBJECTIVETo study the human immunodeficiency virus (HIV) status through heterosexual transmission in Yining city and to provide information on effective intervention measures.

METHODSCohort of HIV sero-discordant couples identified from 1997 to 2000 was formed. Proportional risk model was used to analyze the time of HIV sero-conversion and the related factors. All the recruiters were under informed consent.

RESULTSThrough following on 22 sero-discordant couples, we found that the incidence density (ID) of HIV sero-conversion was 32.49/100 person-year (PY) with 33.74/100 PY for women. In the proportional hazard model, the course of sero-conversion was only 2.43 years and the frequency of sexual contact was statistically significant (>or= 3 times/week vs. < 3 time/week: RR = 1.984, 95% CI: 1.045 - 3.767), indicating this factor was related to the hazard of HIV sero-conversion. However, the viral load of HIV infections has no such effect on HIV sero-conversion of their spouses. In addition, the ratio of CD4(+)/CD8(+) was lower in spouses of HIV sero-conversion than that in spouses of HIV non-sero conversion (t test: t = 4.77, P < 0.01).

CONCLUSIONIn order to control HIV transmission among general population, we suggested that HIV/AIDS counseling and testing be developed for pre-marital people in the region with high HIV prevalence.

Blotting, Western ; China ; epidemiology ; Enzyme-Linked Immunosorbent Assay ; Female ; HIV ; immunology ; HIV Infections ; epidemiology ; immunology ; Humans ; Incidence ; Male ; Proportional Hazards Models ; Sexual Behavior ; Sexually Transmitted Diseases, Viral ; epidemiology ; immunology

BACKGROUNDPreoperative tumor grading becomes one of the most important predictors for lymphadenectomy at primary surgery for clinical stage I endometriod adenocarcinoma. However, there is an inconsistency of tumor grade between preoperative curettage and final hysterectomy specimens, and its associated factors are poorly understood. This study aimed to evaluate the accuracy of tumor grade by preoperative curettage so as to achieve a better stratified management for clinical stage I endometriod adenocarcinoma.

METHODSClinical data of totally 687 patients with clinical stage I endometriod adenocarcinoma who underwent preoperative curettage and primary surgery were retrospectively collected. Compared with final hysterectomy specimens, the sensitivity, specificity, accuracy, positive predictive value, and negative predictive value of tumor grade by preoperative curettage were calculated and their associations with clinicopathologic parameters, including age, status of menopause, position of uterus, location and size of lesion, histological grade, depth of myometrial invasion, cervical invasion, extrauterine spread, peritoneal cytology, metastasis to retroperitoneal lymph node, serum CA125 level, and hormone receptor status, were analyzed.

RESULTSIn final hysterectomy specimens, 139 of 259 grade 1 patients by curettage were upgraded to grade 1 or 2; 31 of 296 grade 2 were upgraded to grade 3, with a significantly discrepant rate of 40.9% (281/687) and an upgraded rate of 24.7% (170/687). The specificity and negative predictive value for grade 3 were 90.7% and 89.9%, while the sensitivity and positive predictive value for grade 1 were 67.1% and 40.9%, respectively.

CONCLUSIONSPreoperative tumor grade by curettage does not accurately predict final histological results, especially in those classified as grade 1. Complete surgical staging seems to be necessary for clinical stage I endometriod adenocarcinoma.

Adenocarcinoma ; diagnosis ; pathology ; surgery ; Adult ; Curettage ; methods ; Endometrial Neoplasms ; diagnosis ; pathology ; surgery ; Female ; Humans ; Hysterectomy ; Middle Aged ; Neoplasm Staging ; methods ; Retrospective Studies

OBJECTIVETo investigate the characteristic of cervical lymph node metastasis of hypopharyngeal carcinoma and its influence to the prognosis.

METHODSOne hundred and eight hypopharyngeal carcinoma patients who accepted treatments in the 1st Affiliated Hospital of China Medical University from 1985 to 2000 were reviewed retrospectively. All of them accepted surgical treatment without pre-operative chemotherapy or radiotherapy. Stage was made according to the standard of International Union Against Cancer (UICC) in 1992. Specimens of the patients were carefully examined to confirm the primary site of the tumor and the distribution of cervical lymph node metastasis. Pathological differentiations of the tumor were classified into high, middle and low category. Kaplan-Meier method was used to estimate the 3rd, 5th years survival.

RESULTSThe rates of lymph node metastasis of was 45.8% for patients with TI and T2 disease, 79.8% for those with T3 and T4, and 75.0% (81/108)for the whole patients(P < 0.05). Patients with pyriform sinus cancer occupied 92.6% (100/108) of all the cases. Cervical lymph node metastasis rate of pyriform sinus cancer and posterior pharyngeal wall cancer were 74. 0% and 87. 5% respectively (P > 0.05). Cervical lymph node metastasis rate of patients with the high, middle and low differentiation tumor were 72. 2% , 67.6% and 85.7% respectively (P > 0.05). The 3rd and 5th years survival rates of all patients were 67.53% and 29.87% respectively. The occurrence of cervical lymph node metastasis was 76.5% in the level II and III, and 8.6% in the level V and VI. CONCLUSIONS Cervical lymph node metastasis rate of hypopharyngeal carcinoma is high. Cervical lymph node metastasis was one of the most significant prognostic factors of hypopharyngeal carcinoma. With the increase of the cervical node metastasis, the 3rd and 5th years survival of the patients declined gradually.

Adult ; Aged ; Female ; Humans ; Hypopharyngeal Neoplasms ; diagnosis ; pathology ; Lymph Nodes ; pathology ; Lymphatic Metastasis ; Male ; Middle Aged ; Neck ; pathology ; Prognosis ; Survival Rate

OBJECTIVETo evaluate the impact of extracapsular spread (ECS) in ipsilateral neck metastasis on prognosis and its related factors in laryngeal cancer.

METHODSThe study included 184 patients who underwent laryngectomy and simultaneous radical or modified radical neck dissection between January 1994 and December 1997 for laryngeal cancer. All of them had a complete 5-year follow-up. We used transparent lymph node detection and continuous slicing method on all neck dissection specimens. Kaplan-Meier model was used for survival analysis and the log-rank test was used to assess significance.

RESULTSWe found pathological neck metastases in 80 patients. Among them, 26 cases (32.5%) had ECS in ipsilateral neck. ECS incidence increased with advanced pathological N (pN) stages (pN1 3.7%, pN2a 25.0%, pN2b 50.0%, and pN2c 55.6%; P = 0.001). ECS incidence also increased with number of positive nodes (1 positive node 8.6%, 2 positive nodes 33.3%, 3 and more positive nodes 66.7%; P < 0.001). Incidences of contralateral neck metastases and ipsilateral neck recurrence in patients with ECS were higher than those in patients without ECS (46.2% vs. 24.1%, P = 0.046; 34.6% vs. 7.4%, P = 0.002). The 5-year survival rate of patients with ECS was significantly lower than that of patients without ECS (23.1% vs. 57.4%, P = 0.013).

CONCLUSIONECS is an important prognostic factor in laryngeal cancer. Patients with ECS have a higher incidence of contralateral neck metastasis, so bilateral neck dissection should be selected.

Adult ; Aged ; Female ; Humans ; Laryngeal Neoplasms ; pathology ; surgery ; Lymphatic Metastasis ; pathology ; Male ; Middle Aged ; Neck ; Neck Dissection ; Prognosis ; Survival Analysis

OBJECTIVETo develop a human ovarian carcinoma SKOV3 model in severe combined immunodeficiency (SCID) mouse and to study its biologic characteristics.

METHODSHuman ovarian carcinoma SKOV3 cells were injected intraperitoneally into female SCID mouse to establish a transplantation model of human ovarian carcinoma. The biological characteristics, metastasis and morphology of transplanted tumors were studied.

RESULTAll tumors grew progressively with no sign of regression. The tumor cells spread around the peritoneal cavity and mainly on the diaphragm, mesentery, peritoneum and around the liver, which was confirmed by histopathology. The morphology, growth pattern and CA125 secretion of primary culture of transplanted cells remained as same as those of ovarian carcinoma cell line SKOV3.

CONCLUSIONAn intraperitoneal transplantation model of human ovarian carcinoma SKOV3 in SCID mice has been developed successfully, which can simulate the biological behavior of peritoneal metastasis of human ovarian carcinoma.

Animals ; Disease Models, Animal ; Female ; Humans ; Mice ; Mice, SCID ; Neoplasm Transplantation ; Ovarian Neoplasms ; pathology ; ultrastructure ; Peritoneal Neoplasms ; secondary ; Transplantation, Heterologous

OBJECTIVETo discuss the method to reconstruct laryngeal defect after vertical partial laryngectomy with resection of arytenoid cartilage.

METHODSLaryngeal defect was reconstructed with local tissues after vertical partial laryngectomy with resection of arytenoid cartilage on 87 patients with laryngeal carcinoma of glottic type (T1 7 cases, T2 54 cases, T3 26 cases). All the lesions invaded arytenoid area or vocal process. No filling tissues were used to increase the height of affected arytenoid area and no skin flap or other tissues were used to reconstruct the vocal cord in all the patients.

RESULTSAll the patients recovered normal swallow in 8 to 19 days postoperation and restored phonation. The decannulation rate was 98.9% (86/87). There were no pharyngeal fistula and pulmonary complications after operation. Local infection occurred in 3 patients and was cured in 7 days. The rate of local recurrence and cervical lymph node metastasis were 8.0% (7/87), 6.9% (6/87) respectively. Lost patients were assumed to death and direct method was used to calculate survival rate. In 87 patients postoperative period was above 3 years, 5 died in 3 years and 3 were lost 3- year survival rate was 90.8% (79/87). In 63 patients postoperative period was above 5 years, 10 died in 5 years and 2 were lost. 5- year survival rate was 81.0% (51/63).

CONCLUSIONSUtilizing local tissues to reconstruct laryngeal defect after vertical partial laryngectomy with resection of arytenoid cartilage will not lead to severe dysphagia. Phonation is acceptable. It not only saves the operation time but also avoids the negative effects of immoderate reparation.

Adult ; Aged ; Arytenoid Cartilage ; surgery ; Carcinoma, Squamous Cell ; pathology ; surgery ; Female ; Humans ; Laryngeal Neoplasms ; pathology ; surgery ; Laryngectomy ; Larynx ; pathology ; surgery ; Male ; Middle Aged ; Reconstructive Surgical Procedures ; methods

OBJECTIVETo evaluate the impact of extracapsular lymph node spread (ECS) in the ipsilateral neck on the contralateral neck metastasis and prognosis of laryngeal cancer.

METHODSThe data of 184 laryngeal cancer patients who underwent laryngectomy and simultaneous radical or modified radical neck lymph node dissection between Jan. 1994 and Dec. 1997 were retrospectively analyzed. Of these 184 patients, 144 underwent unilateral neck lymph node dissection and 40 bilateral; 159 had supraglottic lesion and 25 transglottic. All had squamous cell carcinoma. The clinical T stage was T1 in 3, T2 63, T3 77, T4 41; N stage: NO in 123, N1 38, N2a 5, N2b 11, N2c 7. Transparent lymph node detection and continuous sectioning method were applied to all dissected neck lymph nodes. Statistical analysis was carried out using SPSS software package ( version 11.5). Survival curves were calculated through the Kaplan-Meier model. Impact of extracapsular lymph node spread in the ipsilateral neck on prognosis was assessed using the Log rank test.

RESULTSOf these 184 patients, neck lymph node metastasis was pathologically proven in 80, 26 had ECS in the ipsilateral neck with a ECS rate of 32.5% (26/80). The ECS incidence was positively correlated with advanced pathological N stage and metastatic lymph nodes (P < 0.01). The incidence of the contralateral neck metastasis and ipsilateral neck recurrence with ECS were higher than those without ECS, which was 46.2% versus 24.1%, and 34.6% versus 7.4%, respectively (P < 0.05). The 3- and 5-year survival rates of patients with ECS were significantly lower than those of patients without ECS, which was 53.9% versus 70.4%, and 23.1% versus 57.4%, respectively (P = 0.0125).

CONCLUSIONExtracapsular lymph node spread is found to be an important prognostic factor in the laryngeal cancer. Bilateral neck dissection may be mandatory due to patients with ECS have a higher incidence of contralateral neck metastasis. The capsule of metastatic lymph nodes should be pathologically checked and reported in order to determine the extra-capsular spread status.

Adult ; Aged ; Carcinoma, Squamous Cell ; secondary ; surgery ; Female ; Follow-Up Studies ; Head and Neck Neoplasms ; secondary ; surgery ; Humans ; Kaplan-Meier Estimate ; Laryngeal Neoplasms ; pathology ; surgery ; Laryngectomy ; methods ; Lung Neoplasms ; secondary ; Lymph Nodes ; pathology ; Lymphatic Metastasis ; Male ; Middle Aged ; Neck Dissection ; methods ; Neoplasm Recurrence, Local ; Neoplasm Staging ; Prognosis ; Retrospective Studies

OBJECTIVETo study the long-term follow-up result of partial laryngectomy and reservation of laryngeal function.

METHODSFive hundred and fifty-nine patients who underwent partial laryngectomy from 1996 to 2002 were summarized (male 435 cases, female 124 cases). Among them, 200 cases were supraglottic carcinomas (classified accordingly by UICC standard of years 2002 into: 15 cases of I, 81 cases of II, 72 cases of III, and 32 cases of IV), 354 cases were glottic carcinomas (141 cases of I, 124 cases of II, 88 cases of III, and 1 cases of IV), 5 cases were transglottic carcinomas (2 cases of II and 3 cases of III). In common 7 kinds of operations were performed: 66 cases underwent cordectomy, 119 vertical laryngectomy, 62 horizontal supraglottic laryngectomy, 113 horizontovertical (3/4) laryngectomy, 88 subtotal laryngectomy with cricoglossoepiglottic anastomosis, 26 near total laryngectomy with cricoglossal anastomosis (with reservation of unilateral arytenoid cartilage), 85 laser laryngectomy. Two hundred and sixty-one cases underwent concurrent neck dissection (174 unilateral, 87 bilateral). Safety margin of less than or equal to 5 mm was suspected of having residual lymph node metastasis, the postoperative radiation therapy to treatment.

RESULTSAll cases restored their phonation and overcame aspiration with removing nasal feeding from 7 to 24 days after operations. Four hundred and sixty-six cases were decannulated from 9 days to 3 months after operations. Decannulation rate was 98.3%. Through periodic review of out-patient clinics or telephone follow-up, family members follow-up a variety of ways, three, five or ten years follow-up rate: 99.6% (557/559), 98.2% (549/559), 95.8% (183/191), dollars lost to death. The three years survival rates were 89.6% (501/559). Among them, the survival rates for supraglottic carcinoma patients of stage I and II was 90.6%, stage III and IV 81.7%, for glottic carcinoma patient of stage I and II was 95.2%, stage III and IV 82.4%. The five years survival rates were 75.0% (419/559). Among them, the survival rates for supraglottic carcinoma patients of stage I and II was 75.0%, stage III and IV 62.5%, for glottic carcinoma patient of stage I and II was 81.8%, stage III and IV 70.6%. The ten year survival rates were 71.2% (136/191). Among them, the survival rates for supraglottic carcinoma patients of stage I and II was 69.7%, stage III and IV 65.2%, for glottic carcinoma patient of stage I and II was 77.6%, stage III and IV 72.1%.

CONCLUSIONSPartial laryngectomy is a kind of radical operation with reservation of laryngeal function. Qualities of life and curative effect, were greatly improved.

Adult ; Aged ; Carcinoma, Squamous Cell ; mortality ; surgery ; Female ; Follow-Up Studies ; Humans ; Laryngeal Neoplasms ; mortality ; pathology ; surgery ; Laryngectomy ; Male ; Middle Aged ; Neoplasm Staging ; Survival Rate ; Treatment Outcome

OBJECTIVETo explore the mRNA expression of KAI1 gene in laryngeal squamous-cell carcinoma and its clinical significance.

METHODSFresh laryngeal cancer samples taken from 40 laryngeal carcinoma cases and normal control laryngeal tissues from 9 subjects were examined with semi-quantitative reverse transcription polymerase chain reaction (RT-PCR).

RESULTSModerate, low and negative expression rates of KAI1 gene mRNA in nine normal laryngeal tissues were 33.3% (3/9), 33.3% (3/9) and 33.3% (3/9), respectively. The high, moderate, low and negative expression rates of KAI1 mRNA in 25 laryngeal cancers without lymph node metastasis were 40.0% (10/25), 28.0% (7/25), 20.0% (5/25) and 12.0% (3/25), respectively. The moderate, low and negative expression rates of KAI1 mRNA in 15 laryngeal cancers with lymph node metastasis were 20.0% (3/15), 26.7% (4/15) and 53.3% (8/15), respectively. The KAI1 mRNA expression in the laryngeal cancers without lymph node metastasis was higher than that in normal laryngeal tissues (P < 0.05). The KAI1 mRNA expression in the laryngeal cancers with lymph node metastasis was lower than that in the laryngeal cancers without lymph node metastasis (P < 0.05). The high, moderate and low expression rates of KAI1 mRNA in 10 highly differentiated laryngeal cancers were 50.0% (5/10), 30.0% (3/10) and 20.0% (2/10), respectively. The high, moderate, low and negative expression rates of KAI1 mRNA in 12 low differentiation laryngeal cancers were 8.3% (1/12), 16.7% (2/12), 16.7% (2/12) and 58.3% (7/12), respectively. The differences of KAI1 mRNA expression between high and low differentiation laryngeal cancers were statistically significant (P < 0.05).

CONCLUSIONThe decrease of KAI1 mRNA expression may be related to lymph node metastasis and low differentiation of laryngeal squamous-cell carcinoma.

Adult ; Aged ; Carcinoma, Squamous Cell ; genetics ; metabolism ; pathology ; Female ; Humans ; Kangai-1 Protein ; biosynthesis ; genetics ; Laryngeal Neoplasms ; genetics ; metabolism ; pathology ; Lymph Nodes ; pathology ; Lymphatic Metastasis ; Male ; Middle Aged ; RNA, Messenger ; biosynthesis ; genetics ; Reverse Transcriptase Polymerase Chain Reaction

OBJECTIVE: To assess the performance of a high-definition CT (HDCT) for imaging small caliber coronary stents (< or = 3 mm) by comparing different scan modes of a conventional 64-row standard-definition CT (SDCT). MATERIALS AND METHODS: A cardiac phantom with twelve stents (2.5 mm and 3.0 mm in diameter) was scanned by HDCT and SDCT. The scan modes were retrospective electrocardiography (ECG)-gated helical and prospective ECG-triggered axial with tube voltages of 120 kVp and 100 kVp, respectively. The inner stent diameters (ISD) and the in-stent attenuation value (AVin-stent) and the in-vessel extra-stent attenuation value (AVin-vessel) were measured by two observers. The artificial lumen narrowing (ALN = [ISD - ISDmeasured]/ISD) and artificial attenuation increase between in-stent and in-vessel (AAI = AVin-stent - AVin-vessel) were calculated. All data was analyzed by intraclass correlation and ANOVA-test. RESULTS: The correlation coefficient of ISD, AVin-vessel and AVin-stent between the two observers was good. The ALNs of HDCT were statistically lower than that of SDCT (30 +/- 5.7% versus 35 +/- 5.4%, p < 0.05). HDCT had statistically lower AAI values than SDCT (15.7 +/- 81.4 HU versus 71.4 +/- 90.5 HU, p < 0.05). The prospective axial dataset demonstrated smaller ALN than the retrospective helical dataset on both HDCT and SDCT (p < 0.05). Additionally, there were no differences in ALN between the 120 kVp and 100 kVp tube voltages on HDCT (p = 0.05). CONCLUSION: High-definition CT helps improve measurement accuracy for imaging coronary stents compared to SDCT. HDCT with 100 kVp and the prospective ECG-triggered axial technique, with a lower radiation dose than 120 kVp application, may be advantageous in evaluating coronary stents with smaller calibers (< or = 3 mm).
Analysis of Variance ; Cardiac-Gated Imaging Techniques/methods ; Coronary Disease/*radiography/*therapy ; Humans ; Phantoms, Imaging ; Radiation Dosage ; Radiographic Image Interpretation, Computer-Assisted ; *Stents ; Tomography, Spiral Computed/*methods