Paul T. Gellhaus

Dr. Paul T. Gellhaus

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Research Focus & Metrics

Academic Career Length

16Years (2011-Present)

(Calculated once Scilit publication data is synced: current year − year of first publication + 1)

Representative Publications

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20 July 2011 in BJU International
Verified
Journal Article
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HRHenry M. Rosevear
Henry M. Rosevear
PGPaul T. Gellhaus
Paul T. Gellhaus
ALAndrew J. Lightfoot
Andrew J. Lightfoot
TKTimothy P. Kresowik
Timothy P. Kresowik
FJFadi N. Joudi
Fadi N. Joudi
CTChad R. Tracy
Chad R. Tracy

1 May 2014 in Journal of Urology
Verified
Journal Article
Closed access
NLNick W. Liu
Nick W. Liu
JHJeromy T. Hackney
Jeromy T. Hackney
PGPaul T. Gellhaus
Paul T. Gellhaus
MMM. Francesca Monn
M. Francesca Monn
TMTimothy A. Masterson
Timothy A. Masterson
MKMichael O. Koch
Michael O. Koch
We evaluate the incidence and risk factors of parastomal hernia formation in patients undergoing radical cystectomy and ileal conduit urinary diversion. We retrospectively reviewed the Indiana University cystectomy database between 2001 and 2011, and identified 516 patients who underwent radical cystectomy and ileal conduit diversion. Overall 199 patients had a clinical followup of at least 12 months and all underwent postoperative staging computerized tomography to confirm the presence of parastomal hernia. The incidence of parastomal hernia is reported with correlations made to demographic, patient level and perioperative risk factors. A parastomal hernia developed in 58 patients (29%) at a median followup of 27 months (range 12 to 125). Of these patients 26 (45%) underwent surgical repair due to abdominal discomfort (58%), acute strangulation or obstruction of the small bowel (15%), partial small bowel obstructions (15%) and elective repair for other intra-abdominal procedures (12%). Prior exploratory laparotomy (adjusted HR 1.98, 95% CI 1.97-3.36, p = 0.011) and severe obesity (adjusted HR 4.26, 95% CI 1.52-11.93, p = 0.006) were predictive of parastomal herniation. The cumulative risk of parastomal hernia formation at 1 and 2 years after cystectomy was 12.2% and 22.5%, respectively. We demonstrated that parastomal hernia will develop in nearly a third of patients after radical cystectomy with ileal conduit diversion. Prior laparotomy and severe obesity are independent risk factors. Preoperative counseling and preventative measures regarding parastomal hernia formation should be emphasized, particularly in these at risk patients.

1 April 2020 in Clinical Genitourinary Cancer
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Journal Article
Open access
RGRohan Garje
Rohan Garje
ACAdithya Chennamadhavuni
Adithya Chennamadhavuni
SMSarah L. Mott
Sarah L. Mott
ICIsaac Matthew Chambers
Isaac Matthew Chambers
PGPaul T. Gellhaus
Paul T. Gellhaus
JBJames A. Brown
James A. Brown
Androgen deprivation therapy (ADT) is the gold standard for metastatic prostate cancer, which can be achieved either by surgical or medical castration. In this study, we evaluated the trends of utilization of surgical castration and also assess the survival differences of patients who underwent surgical castration when compared with those who underwent medical castration. The National Cancer Database was used to identify patients with metastatic prostate cancer from 2004 to 2014. Cochran-Armitage tests were used to assess temporal trends in the proportion of patients receiving surgical castration relative to medical castration. Logistic and Cox regression models were utilized to estimate the odds of utilization of surgical castration and the effect of castration on overall survival (OS). A total of 33,585 patients with metastatic prostate cancer were identified; 31,600 (94.1%) had medical castration, and 1985 (5.9%) underwent surgical castration. There was significant decline in the trend of utilization of surgical castration from 8.6% in 2004 to 3.1% in 2014. On multivariable analysis, being of a non-Caucasian race, having lower median income levels, having non-private insurance, and earlier years of diagnosis were found to be associated with increased odds of choosing surgical castration over medical castration. Notably, the odds of surgical castration were lower at academic centers. On univariable analysis, a survival difference between castration modality was evidenced (P < .01); 5-year OS for medical castration and surgical castration were 24.3% and 18.2%, respectively. However, on multivariable analysis, there was no OS difference between surgical castration and medical castration (P = .13). In this large contemporary analysis, the utilization of surgical castration has declined over time, with no OS difference when compared with medical castration. Increasing the utilization of surgical castration could help reduce health care expenditures. With rising health care costs, patients and physicians need to be aware of treatment options and their financial implications.

23 October 2014 in BJU International
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Journal Article
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PDF file
PGPaul T. Gellhaus
Paul T. Gellhaus
ABAkshay Bhandari
Akshay Bhandari
MMM. Francesca Monn
M. Francesca Monn
TGThomas A. Gardner
Thomas A. Gardner
PKPrashanth Kanagarajah
Prashanth Kanagarajah
RBRonald S. Boris
Ronald S. Boris

1 July 2015 in Journal of Endourology
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Journal Article
Closed access
PGPaul T. Gellhaus
Paul T. Gellhaus
MMM. Francesca Monn
M. Francesca Monn
JLJoshua Leese
Joshua Leese
CFChandra K. Flack
Chandra K. Flack
JLJames E. Lingeman
James E. Lingeman
RBRonald S. Boris
Ronald S. Boris
To evaluate outcomes of post-holmium laser enucleation of the prostate (HoLEP) robot-assisted radical prostatectomy (RARP). Using an institutional database, we identified 11 HoLEP patients who subsequently underwent RARP. These were matched 1:2 to RARP patients without a previous transurethral surgical procedure. Variables matched were age, pre-RARP prostate-specific antigen level, and biopsy Gleason score. Urinary continence and sexual function were evaluated by physician questioning, American Urological Association symptom score, and Sexual Health in Men (SHIM) scores. Descriptive statistics were used to compare cohorts. RARP pathologic outcomes were similar between cases and controls. Twenty-seven percent of previous HoLEP patients reached strict urinary continence (leak free, pad free) at last follow-up compared with 64% of matched controls (P=0.071). The average (range) SHIM score at last follow-up was 2.6 (1-5) for previous HoLEP patients compared with 13.9 (5-20) (P<0.001). The posterior bladder neck and apical dissections were significantly more challenging in the setting of previous HoLEP and necessitated a low threshold for wider resection to minimize positive surgical margins. Post-HoLEP RARP is challenging but preliminarily appears safe and feasible when performed by an experienced robotic surgeon. Patients should be counseled regarding expectations of urinary continence and sexual function in this setting.

1 August 2017 in Urology
Verified
Journal Article
Closed access
PGPaul T. Gellhaus
Paul T. Gellhaus
CCClint Cary
Clint Cary
HKHristos Z. Kaimakliotis
Hristos Z. Kaimakliotis
CJCynthia S. Johnson
Cynthia S. Johnson
MWMichael Weiner
Michael Weiner
RBRichard Bihrle
Richard Bihrle