Biomedical subjects

Robert Kay

Publications and source records attributed to Robert Kay.

6 recordsLinked to original sources

PubMed2005

Müllerian papilloma of the cervix in a child with multiple renal cysts.

An 18-month-old girl was referred for evaluation of vaginal bleeding and a renal mass. Ultrasonography and computed tomography revealed multiple simple cysts within the left kidney and a normal right kidney. At vaginoscopy, a 1-cm frond-like papillary lesion overlying the cervix was identified. The pathologic diagnosis was mullerian papilloma, a rare benign tumor of the vagina and uterine cervix. None of the approximately 40 previously reported cases have been associated with renal anomalies, despite the historical classification of these lesions as mesonephric papillomas. We report the first patient with both a renal anomaly and mullerian papilloma of the uterine cervix.

Colposcopy↗

PubMed2005

Modified tubularized incised plate urethroplasty (Snodgrass) procedure for hypospadias repair.

OBJECTIVES: To report the outcomes in a large series using a modified tubularized incised plate (TIP) urethroplasty (Snodgrass) technique with a local de-epithelialized skin flap to cover the urethroplasty. The use of the TIP urethroplasty (Snodgrass) technique has gained wide acceptance among pediatric urologists for the correction of hypospadias repair because of its good cosmesis, low complication rate, and reliability in creating a vertically oriented meatus. METHODS: A total of 101 boys, aged 6 months to 3 years, with distal (n = 85), mid-shaft (n = 8), or proximal (n = 8) hypospadias underwent one-stage repair using a modified TIP repair with a local de-epithelialized skin flap to cover the urethroplasty. Charts were reviewed for each patient to determine the complications, reoperations, cosmesis, and functional results after surgery. RESULTS: With at least 6 months of follow-up, all patients had achieved excellent functional and cosmetic results, with the meatus at the tip of the penis on follow-up. Three repairs for meatal stenosis and two for fistula were needed. CONCLUSIONS: The modified TIP procedure is a safe and reliable technique. It provides excellent cosmesis with a low reoperation rate.

Child, Preschool↗

PubMed2004

Prepubertal testis tumors.

Because prepubertal testis tumors are rare, their management has historically been based on experience with the more common adult testis tumors. However, recent studies highlighting the natural history of these tumors and their response to therapy have resulted in a modern management algorithm that optimizes testicular preservation and minimizes the morbidity of adjuvant therapies. Many prepubertal testis tumors are benign and can be managed with testis-sparing tumor excision. Localized malignant tumors (yolk sac tumors) may be managed with excision alone. Recurrent tumors and metastatic disease can almost always be treated successfully with platinum-based chemotherapy.

Journal Article↗

PubMed2002

Attitudes of pediatric urologists regarding sports participation by children with a solitary kidney.

PURPOSE: Little data are available regarding sports participation and appropriate long-term followup of children with a solitary kidney. We determine the current practice patterns and recommendations among pediatric urologists regarding sports participation and followup of these patients. MATERIALS AND METHODS: A survey was mailed to the 231 active members of the American Academy of Pediatrics, Section on Urology. The survey included questions regarding counseling of patients with a solitary kidney and physician estimates of long-term risk to overall renal function. RESULTS: Of the 231 surveys 182 were returned for an overall response rate of 79%. Of the respondents 68% recommend that patients with a solitary kidney avoid contact sports. Recommendations in regard to participation in contact sports were further stratified as strongly against participation (27%), against participation with rare exceptions (30%), no recommendation either way (14%), allow participation (25%) and no restrictions be made (4%). Of the respondents 88% agreed that the estimated risk of renal loss from a child participating regularly in contact sports is less than 1% and 60% recommended special medical followup. CONCLUSIONS: Despite the consensus that the risk of renal injury in contact sports is low, a significant number of pediatric urologists advise avoidance. There appears to be a lack of consensus regarding long-term medical surveillance of these patients. Studies designed to obtain accurate clinical data regarding these issues are warranted to establish evidence based guidelines for the long-term treatment of children with a solitary kidney.

Adult↗

PubMed2002

Clinical behavior and a contemporary management algorithm for prepubertal testis tumors: a summary of the Prepubertal Testis Tumor Registry.

PURPOSE: The Prepubertal Testis Tumor Registry was established by the Urologic Section of the American Academy of Pediatrics in 1980 to record data on a large number of prepubertal testis tumors regarding presentation, treatment and outcome to define appropriate management better. We reviewed the registry data in the context of other modern studies to elucidate the appropriate management of these rare tumors. MATERIALS AND METHODS: Relevant data in the prepubertal testis tumor registry were tabulated and analyzed. RESULTS: There were 395 prepubertal patients who had a primary testis tumor. Generally benign tumors accounted for 38% of cases. A significant proportion of tumors were benign regardless of patient age. alpha-Fetoprotein levels for patients with benign and malignant tumors overlapped in children younger than 6 months. Of the patients with yolk sac tumor 80% presented with stage 1 disease and overall survival was excellent. There were no metastases or deaths among the patients with teratoma. Of all patients with stromal tumors metastases developed in only 1. CONCLUSIONS: We recommend initial excisional biopsy for all amenable prepubertal testis tumors, except those with an alpha-fetoprotein level that is clearly increased for patient age. Patients with benign tumors may be released from oncological followup. Patients with stage I yolk sac tumor should be monitored closely, and those with recurrent or metastatic yolk sac tumor should be treated with chemotherapy. Retroperitoneal lymph node dissection is reserved for patients with recurrent retroperitoneal masses following chemotherapy. Aggressive treatment of metastatic Sertoli cell or undifferentiated stromal tumors is warranted.

Algorithms↗

PubMedDate not supplied

A review of physician turnover: rates, causes, and consequences.

To assess current knowledge about physician turnover, this article reviews the available literature regarding the rates, causes, and consequences of physicians' leaving a practice. Reported rates of turnover vary widely, both because of differences in reporting methods and by type of healthcare organization and provider. A common contributor to turnover is a mismatch between physicians' expectations and organizational culture or rules, although greater understanding of ways to assess and to predict such mismatch is needed. The costs and consequences of physician turnover are substantial and may include: (a) financial consequences, (b) effects on patient satisfaction, and (c) effects on the organization or practice as a whole, related to the experience of other healthcare providers, and effects on institutional public relations. Our review suggests that greater attention to physician turnover is needed to clarify its frequency and predictors, and strategies to lessen its occurrence.

Attitude of Health Personnel↗