Risk of re-operation after outpatient distal hypospadias repair in a large, multistate cohort.

BACKGROUND: Repair of distal hypospadias is one of the most common pediatric urology procedures in the US. However, the risk of postsurgical complications has been reported primarily from single-institution and tertiary center studies, with short duration of patient follow-up. OBJECTIVE: The aim of the study was to examine the incidence of re-operation and risk factors for re-operation following outpatient distal hypospadias repair in a large, representative sample of US children. METHODS: A retrospective cohort study of patients aged 0-18 years undergoing single-stage distal hypospadias repair was conducted. Data were obtained from the State Ambulatory Surgery and Services Databases of 9 participating states. Patients who underwent outpatient surgery in 2008-2013 were identified using Current Procedural Terminology (CPT) codes. Patients with records suggesting prior surgery for hypospadias (CPT) were excluded, as were patients who underwent the initial repair <2 years before the end of state data availability. Return outpatient surgery visits across institutions within each of the 9 states were tracked to identify re-operations after the single-stage repair, using CPT codes for surgical treatment of hypospadias complications in 2008-2015. Time-to-event analyses were used to estimate the probability (risk) of re-operation over time and to examine whether patient and institutional characteristics were predictive of re-operation (age, race/ethnicity, health insurance, facility ownership, and institutional volume of hypospadias repair). RESULTS: A total of 4673 children treated across 148 institutions were included. The median follow-up time was 4.1 years (range: 2-7.9). Most patients were <1 year of age at the time of initial repair (53%). The risk of re-operation was 2.6% (95% confidence interval [CI]: 2.1-3.0%) at 1 year and 6.7% (95% CI: 6.0-7.5%) at 5 years after initial repair (Figure). Approximately 13% of re-operation patients had the re-operation at a different institution. None of the patient or institutional factors examined was a significant predictor of the risk of re-operation. DISCUSSION: In this population-based cohort, the estimated 5-year risk of re-operation following single-stage distal hypospadias repair was 6.7% (95% CI: 6.0-7.5). Most re-operations occurred after the first year, informing long-term expectations about postoperative complications. This study was limited by a lack of data on severity of hypospadias and surgeon characteristics and the inability to track re-operations outside of the state in which the original repair was performed. CONCLUSION: Approximately 7% of children undergoing distal hypospadias repair undergo a re-operation within 5 years. None of the factors studied were predictive of re-operations.

Short telomeres result in chromosomal instability in hematopoietic cells and precede malignant evolution in human aplastic anemia.

In cell and animal models, telomere erosion promotes chromosomal instability via breakage-fusion-bridge cycles, contributing to the early stages of tumorigenesis. However, evidence involving short telomeres in cancer development in humans is scarce, epidemiological and indirect. Here we directly implicate telomere shortening as a critical molecular event for malignant evolution in aplastic anemia (AA). Patients' telomere lengths at diagnosis of AA, while comparable to age-matched controls, inversely correlated with the probability of developing a cytogenetically abnormal clone. A significantly increased number of telomere signal-free chromosomal ends and chromosomal numerical and structural abnormalities were observed in bone marrow cells of patients with shorter telomeres in comparison with patients with longer telomeres and healthy subjects. The proportion of monosomy-7 cells in the bone marrow at diagnosis of AA inversely correlated with telomere length, years before the emergence of an autonomous and clinically detectable abnormal clone. Marrow cells of clinically healthy individuals carrying loss-of-function telomerase mutations and with extremely short telomeres also showed chromosomal instability in vitro. These results provide the first clinical direct evidence in humans that short telomeres in hematopoietic cells are dysfunctional, mediate chromosomal instability and predispose to malignant transformation in a human disease.

Cost of screening for colorectal cancer: results of a community mass screening program and review of the literature.

Colorectal cancer is the second most common form of cancer in the United States, but controversy exists over the feasibility, benefits, and methods of screening. We conducted a large-scale, community-based screening program to determine the cost of screening for colorectal cancer. Based on detailed cost analysis, we arrived at a cost of $15,233 per case of colon cancer diagnosed through mass screening, and $7611 per polyp discovered. These figures are much higher than those previously reported in less detailed studies. Other studies currently under way will determine whether morbidity and mortality are decreased by screening. Our data add the information necessary to determine the cost-effectiveness of mass screening for colon cancer, and will be useful in designing future strategies for the secondary prevention of colorectal cancer.

Disseminated zygomycosis: report of four cases and review.

We present four cases of disseminated zygomycosis that illustrate the characteristic clinical syndromes and natural history of this infection. The zygomycetes affect individuals immunosuppressed by age, drug therapy, or underlying disease. A previous splenectomy or deferoxamine therapy may be an additional factor in the development of disseminated zygomycosis. Clinical syndromes reflect vascular invasion and organ infarction. Diagnosis requires consideration of risk factors followed by biopsy of the affected organ for culture and for demonstration of broad nonseptate hyphae in tissue sections. Despite advances in the management of many bacterial and fungal infections in the immunosuppressed host, the results of therapy for disseminated zygomycosis remain dismal.

Detection and surveillance of colorectal cancer.

Colorectal cancer is the second most common cause of cancer in the United States. The overall mortality rate approaches 60%. However, the detection of early lesions results in a mortality rate of 20% or less. Therefore, if improvement in survival is to occur, increased efforts need to be focused not only on primary prevention but also on early detection of malignant lesions and the eradication of potentially malignant lesions. There is no universal consensus as to how this can be accomplished. The purpose of this article is to serve as a guideline, providing a practical basis for improving early detection and management of colorectal cancer and its precursors.

Clostridial bloodstream infections.

In a ten-year review at a large community teaching hospital clostridia accounted for less than 1% of all positive bloodstream isolates (26 episodes in 25 patients). All but one of the isolates were clinically significant. Twenty-two patients (88%) had a serious underlying medical condition, and 17 of the episodes (65%) were associated with a bowel source; twelve patients (48%) died of their infection. Clostridial bloodstream infections are particularly clinically significant in patients with serious underlying disease.

Imaging and hepatocellular carcinoma.

When attempting to establish a diagnosis of HCC, the clinician may now choose from a variety of imaging techniques. This choice depends on the availability of technology, the experience and skill of the interpreting physician, and cost. At times, a single study may be all that is necessary to establish the diagnosis, but, at other times, multiple techniques may be necessary. There is no doubt that rapid technologic improvements will continue to alter our diagnostic approach to this disease.

Massive bleeding due to arterial-enteric fistula from an ingested toothpick.

A 62-year-old man developed massive lower gastrointestinal tract bleeding. Upper endoscopy and superior mesenteric arteriography initially failed to disclose a cause of bleeding. On rebleeding, intra-arterial vasopressin infusion during repeated arteriography caused reflux of dye into the iliac vessels to allow visualization of an arterial-enteric fistula. Exploratory laparotomy subsequently revealed perforation of the small bowel and common iliac artery by a toothpick which had been swallowed.

Plasma cortisol and beta-endorphin immunoreactivity in human obesity.

The relationship of the endogenous opioid system and the hypothalamic-pituitary-adrenal axis to obesity was studied. Morning levels of plasma cortisol and beta-endorphin immunoreactivity in obese patients before diet treatment were found to be no different from those in matched family members of normal weight. In 32 untreated obese patients, no relationship between weight or body mass index (a measurement of obesity) and plasma levels of beta-endorphin immunoreactivity or cortisol was found. However, plasma cortisol levels were significantly correlated with obese patient ratings on the depression subscale of the General Health Questionnaire. Dexamethasone administration failed to suppress plasma beta-endorphin levels in untreated obese patients, but this finding has been reported in normal subjects in whom a similar assay methodology was used; it suppressed plasma cortisol levels in 29 of 32. The three patients resistant to suppression also suffered from benign essential hypertension. Plasma beta-endorphin immunoreactivity was unchanged, but cortisol levels significantly decreased as weight was lost on a 400-calorie/day modified protein fast. Patients who failed to complete the 6-month diet program had significantly increased plasma beta-endorphin levels compared to those who successfully completed the program.

Group therapy during a modified fasting diet: themes and process.

Individuals restricted to 400 calories per day were treated with weekly group therapy. The process involved development of group cohesiveness due to a commonly shared experience. The group was unable to accept that weight control meant severe caloric limitation. Themes of dependency and pairing tended to distract the group from their basic task of tolerating severe caloric limitation. Behavioral techniques as well as fostering of insight did not appear effective. Explanations for such a group format are discussed.

Chest pain: coronary or esophageal?

Although it is often relatively easy for the clinician to differentiate between the heart and the esophagus as sources of chest pain, there remains a substantial minority of patients in whom this task is difficult. We have attempted to review points of differential significance which can be elicited through assessment of the patient's symptoms. Diagnostic studies for the detection of esophageal disorders have been reviewed, and the relative usefulness of these studies has been emphasized. As the result of advancements in diagnostic techniques as well as better understanding of esophageal pathophysiology, the clinician is now capable of accurately identifying the esophagus as the source of chest pain.