Incidence and prevalence of colorectal cancer is increasing worldwide. It related with Westernized life style change, easier access to endoscopic facilities and organized cancer prevention program. The pathogenesis of colorectal cancer is multifactorial, most of cases are sporadic. The risk of colorectal cancer is increasing by age, sex, previous history of colon polyps and cancer, family history of colorectal cancer, hereditary colorectal cancer syndrome, and other modifiable conditions. It is best to screen with organized colorectal cancer screening program for average risk patients at the age of 50 and modify screening strategy by risk factors.
Colon ; Colonic Neoplasms ; Colorectal Neoplasms* ; Humans ; Incidence ; Life Style ; Mass Screening* ; Polyps ; Prevalence ; Risk Factors

Animals ; China ; Elapidae ; Humans ; Male ; Snake Bites ; Snake Venoms ; poisoning ; Young Adult

Objective To investigate the effect and its mechanism of diazoxide on the blood-brain barrier (BBB) of rats after cerebral ischemia/reperfusion (I/R) injury.Methods Sixty Wistar rats were randomly divided into sham operation group,I/R group,and diazoxide pretreatment groups of low,middle,large dose (5,10,20 mg/kg).The I/R models of rats were performed to undergo middle cerebral artery embolism by thread.BBB permeability was estimated by Evans blue (EB) dyeing,transmission electron microscope (TEM) was used to observe the modification of interendothelial tight junction (TJ) of capillaries.The expression of aquaporin-4 (AQP4) in every rat brain tissues was detected by immunity histochemistry technique.Results (1) Compared to sham operation group,the permeability extent of EB were significantly increased by I/R,which was distinctly attenuated in middle and large dose of diazoxide pretreatment rats,while no obvious changes were found between I/R and low dose groups.(2) TEM showed that TJ of the brain tissue opened after I/R injury and no significant opening of TJ was observed in middle and large dose of diazoxide preconditioning groups.(3) Compared to sham operation group,the expression of AQP4 in the brain tissue of the I/R group was apparently increased (P ＜0.01).Compared to I/R group,the expression of AQP4 was apparently increased in middle and large dose pretreatment groups (P ＜ 0.01),and there were no obvious difference between low dose group and the I/R group.Conclusions Preconditioning of ischemia/reperfusion injury with diazoxide protects the blood-brain barrier,which may due to keep the TJ closed and decrease expression of AQP4 protein.

Object To study the chemical constituents of GINSENG SINI TANG Methods The active constituents were isolated and purified by chromatographic methods and their structures were identified by physicochemical properties and spectral data Results Seven compounds were obtained and they are ginsenoside Rb 1, Rb 2, Rc, Rd, Re, Rg 1 and uracil respectively Conclusion All these compounds were first obtained from GINSENG SINI TANG

Objective To discuss the anatomic features, clinical presentations, diagnosis,differentiations and treatments of congenital fourth branchial anomaly(CFBA). Methods The clinical data of 8 patients with CFBA were retrospectively analyzed. Results Of the 8 patients aging from 27 to 300 months(median age: 114 months), 4 male and 4 female; 3 untreated previously and 5 recurrent. All lesions, including 1 cyst, 3 sinus (with internal opening) and 4 fistula, located in the left necks. Three patients presented acute suppurative thyroiditis, 4 deep neck abscesses, and 1 neck lump. Preoperative examinations included barium esophagogram, direct laryngoscopy, ultrasonography, CT, MRI, and so on.The principles of managements were adequate drainage, infection control during acute period and radical surgery during quiescent period. Classic surgical approach consisted of complete excision of branchial lesions, dissection of recurrent laryngeal nerve and partial thyroidectomy. Selective neck dissection was applied in recurrent cases to extirpate branchial lesions, scarrings and inflammatory granuloma.Postoperatively, 1 case was with local incision infection which healed by wound care; 1 case was with temporary vocal cord paralysis which completely recovered 1 month after operation. No recurrence was found in all of 8 cases with follow-up of 13 to 42 months (median: 21 months). Conclusions CFBA relates closely anatomically with recurrent laryngeal nerve and thyroid grand. The barium esophagogram and direct laryngoscopy are the most useful diagnostic tools. CT and MRI are all beneficial to the diagnosis of CFBA.The treatment key to CFBA is the complete excision of lesion during a quiescent period after inflammatory control, together with the dissection of recurrent laryngeal nerve ,partial thyroidectomy and partial resection of lamina of thyroid cartilage (if necessary), which all can decrease the risk of complications and recurrence.For recurrent cases, selective neck dissection is a safe and effective surgical procedure.

The rib cartilage has been the most popular autogenous tissue for microtia reconstruction. Donor site complications, especially chest wall deformities occurring after harvest of costal cartilage graft are presented and discussed in many reports. In this study, 100 chest donor sites were evaluated in 34 patients (25 male and 9 female) who underwent costal cartilage grafts for microtia reconstruction from 1992 to 1999, and reviewed for donor site complications by radiography and physical examination. Ribs from which costal cartilage had been harvested showed increased inward bowing on radiographs in 38 of 100 donor sites; the upper ribs record a higher incidence of deformity than lower ribs. The frequency of rib deformity in donor site was 21 percent when cartilages were harvested from patients older than 10 years of age, whereas it was 73.3 percent in patients younger than 10 years. This difference was statistically significant. In our study, the incidence of chest wall deformity was 57 percent, concerning donor site morbidity after the supraperichondrial rib harvesting procedure, whereas it was 35 percent in patients after the subperichondrial rib harvesting procedure. In conclusion, surgeons should consider the possibility of thoracic deformity when planning costal cartilage grafting. To avoid these deformities, costal cartilage harvesting should be made at lower levels of the rib cage, and delayed operation time for thoracic maturation is recommended. More care should be taken to preserve the perichondrium and the germinative zone of the costochondrial junction.
Cartilage* ; Congenital Abnormalities ; Humans ; Incidence ; Male ; Physical Examination ; Radiography ; Ribs ; Thoracic Wall* ; Thorax* ; Tissue Donors ; Transplants

Objective To discuss the indications, risks and benefits of endoscope-assisted transoral approach to excise the submandibular gland. Methods A retrospective review of a series of 12 patients treated by endoscope-assisted transoral submandibular gland excision was carried out. Of the 12 patients, 8were chronic sialoadenitis (2 cases with sialolith), 3 were pleomorphic adenoma, and 1 was cyst of submandibular gland. Preoperatively, all patients were diagnosed as benign diseases by Ultrasonography, CT or MRI. Pathologic diagnosis of 8 cases were identified by fineneedleaspiration cytology (FNAC) or fineneedle aspiration biopsy (FNAB). Results Temporary lingual sensory paresis and temporary limitation of tongue movement were found in two patients. However, these signs soon resolved spontaneously within 1-3 months. There were no other complications. Postoperatively, mean satisfaction score with cosmetic results was 10. All patients were satisfied with the cosmetic results. No recurrences were found in patients with pleomorphic adenoma with a follow-up period ranged from 12 months to 48 months(median follow-up period:36 months). Conclusions Endoscope-assisted transoral excision of the submandibular gland is a feasible and safe approach for the benign diseases of the submandibular gland . The major advantages of this approach are no external scar and no injury to the marginal mandibular nerve.

BACKGROUND: Although actigraphy has been used to evaluated sleep-wake patterns and quality of sleep disorders patients, its usefulness in obstructive sleep apnea syndrome (OSAS) and primary insomnia is unclear. To investigate the value of actigraphy in OSAS and differentiating OSAS from primary insomnia, night polysomnography (PSG) and actigraphy were performed simultaneously. METHODS: 31 OSAS patients and 21 primary insomnia patients were included (16 females, 36 males). Sleep latency, total sleep time, sleep efficiency and actual wake time, movement and fragmentation index (MFI) were obtained in actigraphy and compared with PSG results. Spearmann correlation analysis and Mann-Whitney U test were used. RESULTS: The sleep efficiency and total sleep time are highly correlated in PSG and actigraphy (p<0.05, p<0.01). Respiratory disturbance index and arousal index in PSG was relatively correlated with MFI in actigraphy (p<0.05). Sleep latency is not correlated in PSG and actigraphy (p>0.05). OSAS had a significantly higher movement and fragmentation index (MFI) than that of primary insomnia (p<0.05) CONCLUSIONS: Actigraphy is a useful and convenient test in differentiating OSAS from insomnia as well as sleep-wake cycle disorders.
Actigraphy* ; Arousal ; Female ; Humans ; Polysomnography* ; Sleep Apnea, Obstructive* ; Sleep Wake Disorders* ; Sleep Disorders, Circadian Rhythm ; Sleep Initiation and Maintenance Disorders*

Objective To assess the feasibility,the risks and the advantages of endoscope-assisted submandibular gland resection using a retroauricular hairline incision ( RAHI) by comparing it with the conventional submandibular gland resection.Methods Twenty eight patients with benign lesions of the submandibular gland were included in the prospective clinically controlled study.Thirteen patients had endoscope-assisted resection using the RAHI approach and 15 cases had conventional transcervical approach resection.The size,location and adjacency of all lesions were evaluated by CT or MRI before surgery.The pathologic diagnoses of all cases were identified as benign diseases using fine needle aspiration biopsy.The two groups were compared for incision length,operation time,bleeding,incision cosmetic result,and complications.Results All 28 operations were successfully performed.Incision length in the endoscopic group was significantly longer than that in the trancervical group (Z =-4.516,P＜0.01),and the surgical time was longer in the endoscopic group( Z =-3.263 ,P ＜0.01) .After three months the mean subjective satisfaction score for the incision scar in the endoscopic group was significantly higher than that in the trancervical group(Z=-4.472,P＜0.01).In the endoscopic group,2 cases (15.4%) with temporary numbness of the earlobe and 1 case (7.7% ) with a temporary marginal mandibular nerve paralysis were found postoperatively.However,they recovered within 1 month.All 28 patients were disease free with a follow-up of 10 to 24 months (median of 18 months).Conclusions Endoscope-assisted submandibular gland resection via RAHI is feasible and safe for the treatment of benign submandibular gland lesions.In comparison with the transcervical approach,this method can provide better cosmetic results without significant complications.

PURPOSE: We performed this study to compare 1-day group using a 2nd generation cephalsporin with 3-day group for evaluating hospital acquired infection. METHODS: The patients underwent laparoscopic colorectal surgery at Korea University Medical Center Anam Hospital, from August, 2007 to June, 2008. They were randomly allocated to 2 groups: 1-day or 3-day group. A 2nd generation cephalosporin was administered within 1 hour before surgery with 12-hour intervals. In cases of suspected infection, further studies were done to identify infection. RESULTS: The study included 154 patients (1-day group - 78, vs. 3-day group - 76). No differences were noted between the 2 groups in age, body mass index, smoking, diabetes mellitus, corticosteroid-use were noted. Gender (P=0.011) and mean operative time (P=0.047) between the 2 groups were different. The preventive rates of infection were 87.18% in the 1-day group compared with 82.89% in the 3-day group (P=0.456). CONCLUSION: Our prospective randomized control study concluded that there were no differences between the 1-day and 3-day group in hospital acquired infection. We could come to the conclusion that 1-day antimicrobial agent in laparoscopic colorectal surgery would be adequate in preventing infection.
Academic Medical Centers ; Body Mass Index ; Colorectal Surgery ; Diabetes Mellitus ; Humans ; Korea ; Operative Time ; Prospective Studies ; Smoke ; Smoking