Recurrence-free Curves Research Articles

Intraprocedurally EOB-MRI/US fusion imaging focusing on hepatobiliary phase findings can help to reduce the recurrence of hepatocellular carcinoma after radiofrequency ablation

Background & aims To explore the ability of gadolinium-ethoxybenzyl-diethylenetriamine pentaacetic acid magnetic resonance imaging (EOB-MRI)/ultrasound (US) fusion imaging (FI) to improve the prognosis of radiofrequency ablation (RFA) by ablating the characteristic findings of hepatocellular carcinoma (HCC) in hepatobiliary phase (HBP) imaging. Methods We retrospectively recruited 115 solitary HCC lesions with size of (15.9 ± 4.6) mm. They were all treated by RFA and preoperative EOB-MRI. According to the modalities guiding RFA performance, the lesions were grouped into contrast enhanced US (CEUS)/US guidance group and EOB-MRI/US FI guidance group. For the latter group, the ablation scope was set to cover the HBP findings (peritumoral hypointensity and irregular protruding margin). The presence of HBP findings, the modalities guided RFA, the recurrence rate were observed. Results After an average follow-up of 377 days, local tumor progression (LTP) and intrahepatic distant recurrence (IDR) were 14.8% and 38.4%, respectively. The lesions having HBP findings exhibited a higher recurrence rate (73.7%) than the lesions without HBP findings (42.9%) (p = 0.002) and a low overall recurrence-free curve using the Kaplan-Meier method (p = 0.038). Using EOB-MRI/US FI as guidance, there was no difference in the recurrence rate between the groups with and without HBP findings (p = 0.799). In lesions with HBP findings, RFA guided by EOB-MRI/US FI (53.8%) produced a lower recurrence rate than CEUS/US (84.0%) (p = 0.045). Conclusions The intraprocedurally application of EOB-MRI/US FI to determine ablation scope according to HBP findings is feasible and beneficial for prognosis of RFA.

Oncogene miR-187-5p is associated with cellular proliferation, migration, invasion, apoptosis and an increased risk of recurrence in bladder cancer

BackgroundBladder cancer, the ninth-most-common malignancy worldwide with an estimated 356,000 new cases and 145,000 deaths annually, has a propensity to relapse, requiring lifelong monitoring after diagnosis. 75% patients diagnosed with BC are non-muscle invasive BC and over 50% of them experience recurrences within 6–12 years of initial diagnosis. miRNA are small, noncoding RNA and shown to be oncogenes or anti-oncogenes in bladder cancer, contributing to numerous BC cell processes, including cell proliferation, differentiation, migration and apoptosis. MethodsRT-qPCR were performed to detect the expression of miR-187-5p in tissues and cell lines, After which, clinicopathological variables and the prognostic value of altered miR-187-5p expression in BC was analyzed with the 48 formalin-fixed paraffin-embedded BC samples. Moreover, Cell functional assays (wound healing assay, CCK-8 assay, transwell assay and flow cytometry assay) were performed to explore the relationship between miR-187-5p expression and cell proliferation, migration, invasion and apoptosis in BC. ResultsUp-regulation of miR-187-5p was observed in BC tissues and BC cell lines. Cox proportional hazard regression analysis demonstrated that the patients with low expression of miR-187-5p experience lower risks of recurrence in the univariate and multivariate analysis. The Kaplan-Meier recurrence-free curves suggested that the patients with low expression of miR-187-5p experience lower risks of recurrence. Up-regulation of miR-187-5p promotes cell proliferation and mobility and inhibits the apoptosis of 5637 and UM-UC-3 cell, while down-regulation of miR-187-5p reverses these effects. ConclusionsThe results of our study demonstrated that oncogene miR-187-5p is associated with cellular proliferation, migration, invasion, apoptosis and an increased risk of recurrence in bladder cancer.

Clinical study on microsurgical treatment for craniopharyngioma in a single consecutive institutional series of 335 patients

ObjectivesThe optimal management of craniopharyngioma is still controversial. The aim of this study is to explore microsurgical outcomes of craniopharyngioma in 335 cases. Patients and MethodsClinical data of 335 consecutive patients with craniopharyngioma between March 2011 and March 2017 were retrospectively analyzed. ResultsGross total resection (GTR) was achieved in 265 cases (79.1%), subtotal resection (STR) was obtained in 70 cases (20.9%). The GTR rate was 81.93% in pediatric group and 78.17% in adult group respectively, no significant difference regarding the GTR rate was found in adult group compared with in pediatric group (p > 0.05). However, there was a noticeable difference in the elevated hypothalamic obesity in children group compared with in adult group after operation (p < 0.05). Multivariate analysis indicated that the tumor recurrence and surgical times played a negative role in the resection extent, the odds ratio and 95% confidence interval of the tumor recurrence and surgical times is [0.306 (0.155–0.603), (p < 0.01)] and [2.135 (1.101–4.142), (p < 0.05)] respectively. There was significant difference on panhypopituitarism between GTR and STR group (p < 0.05). However, No significant difference regarding the postoperative visual dysfunction and indepent quality of life respectively between GTR and STR group was found (p > 0.05). Additionally, there were no statistically significant differences for recurrence-free curves between GTR and STR plus adjuvant radiotherapy (p > 0.05). ConclusionsPresent findings demonstrated that tumor recurrence and surgical times contribute to negative total resection for craniopharyngioma. Postoperative precise adjuvant radiotherapy was considered in selected cases if pursuit of GTR was rather dangerous under disadvantageous removal factors.

Long-term outcome of primary external dacryocystorhinostomy.

To assess the long-term functional outcome of external dacryocystorhinostomy (DCR) in terms of epiphora. Single-group cohort study. Section of Ophthalmology, The Aga Khan University Hospital, Karachi, from January 2000 to June 2010. This study included adults who underwent external DCR surgery at the AKUH during January 2000 to June 2010. The main outcome measure was the proportion of patients reporting to have developed epiphora after surgery. During the telephonic interviews participants were asked if they had a recurrence (symptoms such as watering or discharge) after surgery. Individuals answering in affirmative were asked when the symptoms started. Data on age at surgery, gender and pre-operative symptoms were collected from medical records. Recurrence-free curves were calculated according to the Kaplan-Meier method. A total of 44 persons who underwent DCR surgery were contactable by telephone in 2011 and all agreed to participate in the study. The mean age of the patients at the time of surgery was 48.0 ± 15.8 years. Overall, 38.6% (17/44) participants reported having developed epiphora after surgery. The overall median recurrence-free time was 1.7 years; there was no statistically significant difference in the median recurrence-free time between men and women. The long-term functional outcome of external DCR surgery does not appear to be optimal and, in fact, far worse than the short-term results reported in the international literature.

Long-term Results and Recurrence-Related Risk Factors for Crohn Disease in Patients Undergoing Side-to-Side Isoperistaltic Strictureplasty

Side-to-side isoperistaltic strictureplasty (SSIS) is useful in patients undergoing surgery for Crohn disease (CD) to avoid wide small-bowel resections. To our knowledge, there are no definitive data regarding its recurrence risk factors. To evaluate the results obtained in a monocentric population of patients with CD who have undergone SSIS. From August 1996 to March 2010, 91 patients with CD underwent SSIS in our center. In this prospective observational study, side-to-side isoperistaltic strictureplasty was according the Michelassi technique in 69 patients and the Tonelli technique in 22 patients. Factors relating to the patient and the CD, surgery, and pharmacological therapy during the preoperative and perioperative periods were evaluated in association with medical or surgical recurrence. Side-to-side isoperistaltic strictureplasty. The recurrence-free curve was estimated using Kaplan-Meier analysis. Patients were stratified into cohorts in relation to the considered categorical variables and data were compared by using the Mantel-Cox log-rank test. Cox proportional hazard regression analysis was used to set up a predictive model simultaneously exploring the effects of all independent variables on a dichotomous outcome recurrence in relation to time. Among the 91 patients, the mean (SD) age was 39.5 (11.2) years and preoperative disease duration was 97.9 (85.8) months; 83 patients (91.2%) were followed up, of whom 37 (44.58%) experienced a recurrence at a mean (SD) of 55.46 (36.79) months after surgery (range, 9-140 months). The recurrence in the SSIS site at a mean (SD) of 48.25 (29.94) months after surgery affected 24 of 83 patients (28.9%), 9 being medical and 15 being surgical recurrence. Recurrence in the SSIS was statistically significantly associated with the time elapsed between diagnosis and surgery (P = .03). A borderline association between family history of CD and surgical recurrence (P = .054) was also found. Multivariate analysis identified the age at diagnosis (χ2 = 5.56; P = .02) and at surgery (χ2 = 7.77; P = .005), family history (χ2 = 6.26; P = .01), and smoking habit (χ2 = 10.06; P = .007) as independent risk factors for recurrence. In the short-term, SSIS leads to a resolution of symptoms in more than 90% of cases and the recurrence rate in the SSIS area is acceptable, even after long-term follow-up.

Maintenance Therapy of Facial Seborrheic Dermatitis with 0.1% Tacrolimus Ointment.

BackgroundTopical calcineurin inhibitors (TCIs) have been successfully used to treat seborrheic dermatitis (SD) patients. Meanwhile, treatment of atopic dermatitis (AD) with low-dose, intermittent TCI has been proved to reduce disease flare-ups. This regimen is known as a maintenance treatment.ObjectiveThe aim of this trial was to investigate the efficacy and tolerability of a maintenance treatment with tacrolimus ointment in patients with facial SD.MethodsDuring the initial stabilization period, patients with facial SD or AD applied 0.1% tacrolimus ointment twice daily for up to 4 weeks. Clinical measurements were evaluated on either in the whole face or on separate facial regions. When an investigator global assessment score 1 was achieved, the patient applied tacrolimus twice weekly for 20 weeks. We also compared our results with recent published data of placebo controlled study to allow an estimation of the placebo effect.ResultsThe time to the first relapse during phase II was similar in both groups otherwise significantly longer than the placebo group. The recurrence-free curves of two groups were not significantly different from each other; otherwise the curve of the placebo group was significantly different. There were no significant differences between the 2 groups in the number of DEs, and treatment days for disease exacerbations (DEs). The adverse event profile was also similar between the 2 groups. During the 20 weeks of treatment, the study population tolerated tacrolimus ointment well.ConclusionThe results of this study suggest that maintenance treatment with tacrolimus may be effective in preventing the occurrence of facial SD exacerbations.

Ten-year follow up after laparoscopic suture rectopexy for full-thickness rectal prolapse

Studies have shown that recurrence rates of full-thickness rectal prolapse (FTRP) 5 years after surgery can quadruple at 10 years. This study aimed to evaluate the impact of laparoscopic suture rectopexy for FTRP on recurrence rates and functional outcome at a median follow up of 10 years. Prospectively collected data for patients who underwent laparoscopic suture rectopexy for FTRP between 1993 and 2006 were analysed. Laparoscopic rectopexy consisted of circumferential mobilization of the rectum down to the levator followed by suture suspension to promontory. Patients with preexisting constipation or who were unfit for general anaesthesia were not included. Incontinence, quality of life and constipation were assessed by validated scores. Recurrence-free curves were generated using the Kaplan-Meier method. One hundred and seventy-nine patients with a median age of 62 (15-93) years including 174 women and five men underwent laparoscopic suture rectopexy. There was no mortality. The 30-day complication rate was 4% (partial transection of the left ureter, pneumonia, urinary tract infection, urinary retention, superficial surgical site infection). Data on 172 patients (96%) were available at follow up. There were 10 recurrences of FTRP at 5-year follow up giving a crude recurrence rate of 6%. The actuarial 10-year recurrence rate was 20% (95% CI, 10.8-20.1). Follow-up continence (P < 0.0001) and quality of life were better than preoperatively: lifestyle (P < 0.001), coping (P < 0.001), self-perception (P < 0.005), embarrassment (P < 0.06). Constipation was unchanged. Laparoscopic suture rectopexy led to few complications, a recurrence rate of 20%, improved continence and quality of life with no worsening of constipation at 10 years.

Male Gender is a Risk Factor for Recurrent Appendicitis Following Nonoperative Treatment

This prospective study investigates recurrence rates and identifies predictive factors for recurrence following successful nonoperative treatment in adult patients with acute appendicitis. Between January 2003 and December 2009, adult patients with acute appendicitis who received successful nonoperative management were enrolled. Cumulative recurrence rates were calculated using the Kaplan-Meier method. Recurrence-free curves were compared using with the log-rank test. Cox regression models were employed to identify parameters that significantly and independently predict recurrence. During the study period, 128 patients were enrolled. The median follow-up period was 12 months (range=1-90 months). Twenty (16%) patients developed recurrent appendicitis during follow-up. Twenty-one (16%) patients underwent interval appendectomy (IA). There was no significant difference between nonperforated (NPA) and perforated appendicitis (PA) groups with respect to recurrence rates (16% at the 9th month). Moreover, male gender was significantly associated with recurrence (HR 3.45; 95% CI, 1.15-10.39). Analytical results remained significant after excluding IA patients. Since the recurrence rate is similar between NPA and PA, nonoperative treatment can be used for PA patients. Roughly 20% of the adult patients selected for nonoperative treatment experienced recurrence. Males were more susceptible than females to recurrent appendicitis.

No Rectopexy Versus Rectopexy Following Rectal Mobilization for Full-Thickness Rectal Prolapse: A Randomized Controlled Trial

No randomized controlled trial has compared no rectopexy with rectopexy for external full-thickness rectal prolapse. This study was performed to test the hypothesis that recurrence rates following no rectopexy are not inferior to those following rectopexy for full-thickness rectal prolapse. This was a multicenter randomized controlled trial. Eligible patients were randomly assigned to no rectopexy or rectopexy. The end point was recurrence rates defined as the presence of external full-thickness rectal prolapse after surgery. A prerandomized controlled trial meta-analysis suggested a sample size of 251 patients based on a 15% expected difference in the 5-year cumulative recurrence rate. Recurrence-free curves were generated and compared using the Kaplan-Meier method and log-rank test, respectively. Data were presented as median (range). This study was conducted in 41 tertiary centers in 21 countries. Patients with prior surgery for rectal prolapse or pelvic floor descent were not included. The no-rectopexy arm was defined as abdominal surgery with rectal mobilization only. The rectopexy arm was defined as abdominal surgery with mobilization and rectopexy. Sigmoid resection was not randomized and was added in the presence of constipation. Two hundred fifty-two patients with external full-thickness rectal prolapse were randomly assigned to undergo no rectopexy or rectopexy in 41 centers. All patients but one underwent the allocated intervention. One hundred sixteen no-rectopexy patients were comparable to 136 rectopexy patients for age (P = .21), body mass index (P = .61), ASA grade (P = .29), and previous abdominal surgery (P = .935), but not for sex (P = .013) and external full-thickness rectal prolapse length (8 (1-25) cm vs 5 (1-20) cm, P = .026). Sigmoid resection was performed more frequently in the no-rectopexy arm (P < .001). There was no significant difference in complication rates (11% vs 17.9%; P = .139). The mortality rate was 0.8%. The loss of patients to 5-year follow-up was 10.3%. Actuarial analysis demonstrated a significant difference in 5-year recurrence rates between study arms (8.6% vs 1.5%) (log-rank, P = .003). Limitations were the high proportion of male patients, randomization timing, the lack of standardization for rectopexy technique, and the 10% loss to follow-up. Recurrence rates following no rectopexy are inferior to those following rectopexy for external full-thickness rectal prolapse.

Pretreatment serum level of HER2/nue as a prognostic factor in metastatic prostate cancer patients about to undergo endocrine therapy

Overexpression of the HER2 receptor protein and amplification of the HER2 gene has been implicated in tumor development and progression, and has been associated with a poor prognosis in several types of cancer. The aim of this study was to evaluate whether pretreatment serum HER2 levels can be used to predict biochemical recurrence-free survival in prostate cancer patients about to undergo endocrine therapy. The study population consisted of 379 untreated patients with histologically diagnosed prostate cancer: 197 with T2N0M0, 93 with T3N0M0, 19 with TxN1Mx, and 70 with TxNxM1. Serum HER2 levels were assessed in the prostate cancer patients prior to treatment as well as in a control group of 100 patients with histologically confirmed non-cancer. Biochemical recurrence-free curves for the patients were investigated separately using the Kaplan-Meier method. The mean level of HER2 in serum was significantly higher in prostate cancer patients than non-prostate cancer patients (P = 0.006). Also, the serum HER2 level was significantly higher in bone metastatic cancer patients (14.3 +/- 6.3 ng/mL) than in non-metastatic patients (T2: 11.9 +/- 2.3 ng/mL, P = 0.003; T3: 12.2 +/- 2.8 ng/mL, P = 0.011). The metastatic patients were divided into those with low and high HER2 levels using a cutoff value of 12.6 ng/mL based on receiver-operating characteristic curves. The biochemical recurrence-free rate was significantly poorer in patients with a high HER2 level (P = 0.0078, log-rank test). Multivariate Cox logistic regression analysis demonstrated that the pretreatment serum HER2 value (P = 0.022), serum prostate-specific antigen value (P = 0.018), and extent of disease score (P = 0.027) were independent predictors of recurrence. The pretreatment serum HER2 level may be a useful independent prognostic factor that is associated with a high risk of biochemical recurrence in metastatic prostate cancer patients about to undergo endocrine therapy.

Recurrence Rates After Abdominal Surgery for Complete Rectal Prolapse: A Multicenter Pooled Analysis of 643 Individual Patient Data

This study was designed to determine what impact surgical technique, means of access, and method of rectopexy have on recurrence rates following abdominal surgery for full-thickness rectal prolapse. Consecutive individual patient data on age, gender, surgical technique (mobilization-only, mobilization-resection-pexy, or mobilization-pexy), means of access (open or laparoscopic), rectopexy method (suture or mesh), follow-up length, and recurrences were collected from 15 centers performing abdominal surgery for full-thickness rectal prolapse between 1979 and 2001. Recurrence was defined as the presence of full-thickness rectal prolapse after abdominal surgery. Chi-squared test and Cox proportional hazards regression analysis were used to assess statistical heterogeneity. Recurrence-free curves were generated and compared using the Kaplan-Meier method and log-rank test, respectively. Abdominal surgery consisted of mobilization-only (n = 46), mobilization-resection-pexy (n = 130), or mobilization-pexy (n = 467). There were 643 patients. After excluding center 8, there was homogeneity on recurrence rates among the centers with recurrences (n = 8) for age (hazards ratio, 0.6; 95 percent confidence interval, 0.2-1.7; P = 0.405), gender (hazards ratio, 0.6; 95 percent confidence interval, 0.1-2.3; P = 0.519), and center (hazards ratio, 0.3; 95 percent confidence interval, 0.1-1.5; P = 0.142). However, there was heterogeneity between centers with (n = 8) and without recurrences (n = 6) for gender (P = 0.0003), surgical technique (P < 0.0001), means of access (P = 0.01), and rectopexy method (P < 0.0001). The median length of follow-up of individual centers varied from 4 to 127 months (P < 0.0001). There were 38 recurrences at a median follow-up of 43 (range, 1-235) months. The pooled one-, five-, and ten-year recurrence rates were 1.06, 6.61, and 28.9 percent, respectively. Age, gender, surgical technique, means of access, and rectopexy method had no impact on recurrence rates. Although this study is likely underpowered, the impact of mobilization-only on recurrence rates was similar to that of other surgical techniques.

Randomized study of single early instillation of (2r)-4- o-tetrahydropyranyl-doxorubicin for a single superficial bladder carcinoma. : Cancer 2002;94:363–8.

Background: Although transurethral resection of a bladder tumor (TUR-BT) alone has been standard treatment for single superficial bladder carcinoma, some authors reported a certain prophylactic effect of a single immediate intravesical instillation of chemotherapeutic agent after TUR-BT. A prospective randomized study was conducted to determine whether a single (2R)-4- O-tetrahydropyranyl-doxorubicin (THP) instillation immediately after TUR-BT is beneficial to patients with a single superficial bladder carcinoma. Methods: One hundred seventy patients with a single resectable superficial bladder carcinoma (Ta-1, primary or recurrent with no recurrence during the last 1 year) were enrolled in this study. THP (30 mg/30 mL of normal saline) was administered into the bladder within 6 hours after TUR-BT in arm A, whereas TUR-BT alone was done in arm B. Results: Of the 170 patients, 160 (94.1%) were eligible and were followed up for a median time of 40.8 months. There was a significant difference in the recurrence-free curve between the 2 arms (log-rank test; P = 0.0026), with 92.4% recurrence-free rate at 1 year, 82.7% at 2 years, and 78.8% at 3 years in arm A (84 patients) and 67.0%, 55.7%, and 52.6%, respectively, in arm B. The recurrence rate per year was 0.11 ± 0.22 in arm A and 0.24 ± 0.36 in arm B, with a significant difference ( P = 0.007). Toxicity included pain with micturition in 9 patients (10.7%), urinary frequency/urgency in 5 patients (6.0%), and macroscopic hematuria in 7 patients (8.3%). Conclusions: These data indicate that a single THP instillation immediately after TUR reduces the recurrence of superficial bladder carcinoma.

A Randomized Study of Short-v ersus Long-Term Intravesical Epirubicin Instillation for Superficial Bladder Cancer

Objective: A prospective randomized study was undertaken to determine whether prophylactic maintenance instillation of epirubicin following induction treatment is beneficial in patients with superficial bladder cancer. Patients and Methods: One hundred and forty-eight patients with resectable superficial bladder cancer (Ta-1, single, multiple, primary or recurrent with, however, no recurrence during the last year) were enrolled in this study. In both arms, epirubicin (40 mg/ml in normal saline) was administered six times within 4 weeks after a transurethral resection of the bladder tumor(s). In arm A, the patients received 11 additional monthly instillations of epirubicin. Results: Of the 148 patients, 138 (93.2%) were eligible and followed for an average of 29.6 months. 93 (67.4%) had a solitary tumor. No significant difference in the recurrence-free curve was observed between the two arms (p = 0.62). The recurrence rate per year was 0.16 in arm A and 0.17 in arm B. Toxicity included vesical irritability in 10 (7.2%) and hematuria in 1 patient. No significant difference in the frequency or degree of toxicity was observed between the two arms. Conclusion: These data suggest that maintenance instillation of epirubicin does not reduce superficial bladder cancer recurrence.

Short-term treatment of acute urinary tract infection in girls

The efficiency of treatment of acute urinary tract infections with sulfamethizole for 3 days, sulfamethizole for 10 days, and pivmecillinam for 3 days was compared in a randomized multicentre study comprising 264 girls aged 1-15 years. For ethical reasons children with complicated diseases were not included. In these treatment groups no significant growth after treatment was found in 81%, 77%, and 74%, respectively (NS). New bacteria after treatment were found less frequently after sulfamethizole for 3 days (4%) when compared to sulfamethizole for 10 days (14%) and pivmecillinam for 3 days (13%) (p = 0.048). After pivmecillinam treatment 75% of new bacteria were Streptococcus faecalis versus 25% after sulfamethizole for 3 days and 18% after sulfamethizole for 10 days (p = 0.016). In the subgroup with nephro-urological abnormalities no significant growth after treatment was found in 68% of the sulfamethizole 3-day treated group, 54% of the sulfamethizole 10-day treated group, and 67% of the pivmecillinam 3-day treated group (NS). All treatments resulted in a change in the bacterial sensitivity pattern when bacteria isolated 1-10 days after treatment was compared to those found before treatment. This was more pronounced after the 10-day treatment when compared to the 3-day treatment. The sensitivity patterns of the bacteria isolated from recurrences were similar to those seen before treatment. After treatment there was no difference in the actuarial percentage recurrence-free curves of the 3 treatment groups. Side effects were rare in the sulfamethizole treated groups, and seen more often in the pivmecillinam treated group. 3-day treatment with sulfamethizole or alternatively pivmecillinam is recommended as first choice for treatment of uncomplicated acute urinary tract infections in girls.

Nitrofurantoin versus Trimethoprim Prophylaxis in Recurrent Urinary Tract Infection in Children

The efficiency of nitrofurantoin and trimethoprim prophylaxis in preventing recurrent urinary tract infections (UTI) was compared by means of actuarial percentage recurrence-free curves in a randomized, double blind study in 130 children (126 girls, 4 boys) aged 1 to 14 years (mean 7.5). The children received the antibiotics for 6 months. Nitrofurantoin proved to be the most efficient prophylactic drug in patients with abnormal urography and/or reflux (n = 60) as evaluated by actuarial percentage recurrence-free analysis (p = 0.0025). However, no differences was found in patients without urinary tract abnormalities. Nitrofurantoin prophylaxis altered neither the pattern of resistance nor the bacteriological constellation, while patients receiving trimethoprim prophylaxis had 76% trimethoprim resistant bacteria during prophylaxis, compared with 8% before (p less than 0.0001) and 17% after (p less than 0.0001) prophylaxis. The percentage of recurrences due to E. coli (70-80%) was unaffected by trimethoprim prophylaxis, but the proportion due to trimethoprim resistant E. coli was significantly higher during prophylaxis (65%) than before (6%, p less than 0.0001) and after (11%, p less than 0.001). The percentage of Staphylococcus epidermidis UTI was significantly higher during trimethoprim prophylaxis (27%) than before (2%, p less than 0.0003). Following prophylaxis there was no difference in the actuarial percentage recurrence-free curves of the two regimens. Side effects occurred more frequently in the nitrofurantoin group (37%) than in the trimethoprim group (21%) (p = 0.05). The majority of side effects in the nitrofurantoin group derived from gastrointestinal symptoms. In conclusion, nitrofurantoin is recommended as the first choice prophylactic treatment of children with recurrent UTI and urinary tract abnormalities.

The efficacy of comprehensive neck dissection with or without postoperative radiotherapy in nodal metastases of squamous cell carcinoma of the upper respiratory and digestive tracts

Neck recurrence-free curves corrected for local recurrence were compared for 494 patients who underwent 565 comprehensive neck dissections. In 42 dissections, no radicality could be obtained. Of the 523 histologically radical dissections, examination revealed tumor in 352 cases. Patients in whom three or more positive nodes or extranodal spread in one or more nodes were found received postoperative radiotherapy. In the histologically N0 group, the incidence of neck recurrence after 5 years was 3%; in the N+ group as a whole, it was 10%. Analysis of the influence of extranodal spread and the number of positive nodes showed that the group with one or two positive nodes without extranodal spread (that did not receive postoperative radiotherapy) did not statistically differ from the other groups. This suggests that the results of the group with one or two positive nodes without extranodal spread can be improved by postoperative radiotherapy.

Does psychiatric illness affect the recurrence rate of genital herpes?

The progress of 58 patients with first attacks of genital herpes was monitored for up to 30 weeks. The effects of sex (gender), age, social class, and non-psychotic psychiatric illness (as measured by the "general health questionnaire," GHQ) on the recurrence rate of herpes was studied. The recurrence rates, measured by the actuarial percentage recurrence-free curves, showed that the 29 patients with GHQ scores above 11 had a significantly higher recurrence rate than those who scored less than 11 (P = 0.002). There were no important differences between recurrence rates according according to sex, age, or social class. These findings suggest that non-psychotic states, such as anxiety or obsessionality resulting in GHQ scores above 12, may possibly cause an excess production of adrenergic substances which encourages reactivation of latent genital herpes. Thus, to lessen the recurrence rate in such patients, a psychological or chemical approach to treatment could be used to modify the autonomic sympathetic response.