Arpan Prabhu

Dr. Arpan Prabhu

Department of Radiation Oncology, University of Arkansas for Medical Sciences, UAMS Winthrop P. Rockefeller Cancer Institute
orcid

Research Focus & Metrics

Academic Career Length

12Years (2015-Present)

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

Representative Publications

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1 March 2017 in JAMA Dermatology
Verified
Journal Article
Closed access
GGGiorgia L. Garrett
Giorgia L. Garrett
PBPaul D. Blanc
Paul D. Blanc
JBJohn Boscardin
John Boscardin
ALAmanda Abramson Lloyd
Amanda Abramson Lloyd
RARehana L. Ahmed
Rehana L. Ahmed
SASarah T. Arron
Sarah T. Arron
Skin cancer is the most common malignancy occurring after organ transplantation. Although previous research has reported an increased risk of skin cancer in solid organ transplant recipients (OTRs), no study has estimated the posttransplant population-based incidence in the United States. To determine the incidence and evaluate the risk factors for posttransplant skin cancer, including squamous cell carcinoma (SCC), melanoma (MM), and Merkel cell carcinoma (MCC) in a cohort of US OTRs receiving a primary organ transplant in 2003 or 2008. This multicenter retrospective cohort study examined 10 649 adult recipients of a primary transplant performed at 26 centers across the United States in the Transplant Skin Cancer Network during 1 of 2 calendar years (either 2003 or 2008) identified through the Organ Procurement and Transplantation Network (OPTN) database. Recipients of all organs except intestine were included, and the follow-up periods were 5 and 10 years. Incident skin cancer was determined through detailed medical record review. Data on predictors were obtained from the OPTN database. The incidence rates for posttransplant skin cancer overall and for SCC, MM, and MCC were calculated per 100 000 person-years. Potential risk factors for posttransplant skin cancer were tested using multivariate Cox regression analysis to yield adjusted hazard ratios (HR). Overall, 10 649 organ transplant recipients (mean [SD] age, 51 [12] years; 3873 women [36%] and 6776 men [64%]) contributed 59 923 years of follow-up. The incidence rates for posttransplant skin cancer was 1437 per 100 000 person-years. Specific subtype rates for SCC, MM, and MCC were 812, 75, and 2 per 100 000 person-years, respectively. Statistically significant risk factors for posttransplant skin cancer included pretransplant skin cancer (HR, 4.69; 95% CI, 3.26-6.73), male sex (HR, 1.56; 95% CI, 1.34-1.81), white race (HR, 9.04; 95% CI, 6.20-13.18), age at transplant 50 years or older (HR, 2.77; 95% CI, 2.20-3.48), and being transplanted in 2008 vs 2003 (HR, 1.53; 95% CI, 1.22-1.94). Posttransplant skin cancer is common, with elevated risk imparted by increased age, white race, male sex, and thoracic organ transplantation. A temporal cohort effect was present. Understanding the risk factors and trends in posttransplant skin cancer is fundamental to targeted screening and prevention in this population.

1 December 2015 in JAMA Otolaryngology–Head & Neck Surgery
Verified
Journal Article
Open access
PDF file
JMJessica H. Maxwell
Jessica H. Maxwell
LTLester D. R. Thompson
Lester D. R. Thompson
MBMargaret S. Brandwein-Gensler
Margaret S. Brandwein-Gensler
BWBernhard G. Weiss
Bernhard G. Weiss
MCMartin Canis
Martin Canis
SCSimion I. Chiosea
Simion I. Chiosea
The principle of en bloc resection has been a standard of surgical oncology. While en bloc resection still remains a key surgical principle, the extension of surgical oncology into more complex anatomical areas and technological advances (ie, endoscopic mucosal resections, transoral laser microsurgery) highlight the need to reconsider the potential merits of piecemeal tumor removal.1,2 Piecemeal resections are controversial because they result in fragmentation of the removed specimen, compromising its integrity and complicating confident histopathologic evaluation for the adequacy of excision. While in certain areas of the body, such as the skull base or larynx, piecemeal tumor removal may be justified by anatomical constraints3 or functional imperatives4 (ie, preservation of voice and deglutition), the apparently increasing use of the piecemeal approach in anatomically simpler and more accessible parts of the human body is more difficult to understand. Some oncologic resections, including prostatectomies, partial nephrectomies, and breast-conserving surgical procedures, are now composed of multiple parts, with margins being distinct and separate from the main resected specimen.5-8 In such scenarios, it becomes unclear as to what is an adequate resection and what is the margin.

1 September 2018 in Orthopedics
Verified
Journal Article
Closed access
PDF file
NRNicole D. Rynecki
Nicole D. Rynecki
DCDaniel Coban
Daniel Coban
OGOwen Gantz
Owen Gantz
RGRaghav Gupta
Raghav Gupta
VAVarun Ayyaswami
Varun Ayyaswami
KBKathleen S. Beebe
Kathleen S. Beebe
A recent study that evaluated the risk of facing a malpractice claim by physician specialty found that orthopedic surgeons were at a significantly greater risk of being sued than other medical specialists. To date, no studies have characterized trends in orthopedic surgery malpractice claims. The Westlaw legal database was used to locate state and federal jury verdicts and settlements related to medical malpractice and orthopedic surgery from 2010 to 2016. Eighty-one cases were analyzed. The mean age of the affected patients and/or plaintiffs was 53.4 years. Spine surgery (21 cases; 25.9%), knee surgery (17 cases; 21.0%), and hip surgery (11 cases; 13.6%) were litigated most often. Procedural error (71 cases; 87.7%) and negligence (58 cases; 71.6%) were the 2 most commonly cited reasons for litigation. The jury found in favor of the defendant in most (50 cases; 61.7%) of the cases. The mean plaintiff (17 cases; 21.0%) verdict payout was $3,015,872, and the mean settlement (13 cases; 16.0%) value was $1,570,833. Unnecessary surgery (odds ratio [OR], 12.29; 95% confidence interval [CI], 1.91–108.46; P =.040) and surgery resulting in death (OR, 26.26; 95% CI, 2.55–497.42; P =.040) were significant predictors of a verdict in favor of the plaintiff. Patient death (OR, 0.05; 95% CI, 0.01–0.38; P =.021) and male patient sex (OR, 0.26; 95% CI, 0.09–0.71; P =.033) were significant negative predictors of a verdict in favor of the defendant. The jury found in favor of the defendant orthopedic surgeon in most cases. Procedural error and/or negligence were cited most commonly by the plaintiffs as the bases for the claims. Verdicts in favor of the plaintiffs resulted in payouts nearly double those of settlements. [ Orthopedics . 2018; 41(5):e615–e620.]

15 July 2018 in Spine
Verified
Journal Article
Closed access
NANitin Agarwal
Nitin Agarwal
RGRaghav Bs Gupta
Raghav Bs Gupta
PAPrateek Agarwal
Prateek Agarwal
PMPravin Ba Matthew
Pravin Ba Matthew
RWRichard Jr Bs Wolferz
Richard Jr Bs Wolferz
DHDavid Kojo Hamilton
David Kojo Hamilton
Study Design.: A retrospective review. Objective.: This study aimed to determine the factors associated with malpractice litigation in cases involving spine surgery in the United States. Summary of Background Data.: Medical malpractice is of substantial interest to the medical community due to concerns of increased health care costs and medical decision-making for the sole purpose of reducing legal liability. Methods.: The Westlaw online legal database (Thomson Reuters, New York, NY) was searched for verdict and settlement reports pertaining to spine surgery from 2010 to 2015. Data were collected regarding type of procedure, patient age and gender, defendant specialty, outcome, award, alleged cause of malpractice, and factors involved in the plaintiff's decision to file. Initial search queried 187 cases, after which exclusion criteria were applied to eliminate duplicates and cases unrelated to spine surgery, yielding a total of 98 cases for analysis. Results.: The verdict was in favor of the defendant in 62 cases (63.3%). Neurosurgeons and orthopedic surgeons were the most common defendants in 29 (17.3%) and 40 (23.8%) of the cases, respectively. A perceived lack of informed consent was noted as a factor in 24 (24.4%) of the cases. A failure to diagnose or a failure to treat was noted in 31 (31.6%) and 32 (32.7%) cases, respectively. Median payments for plaintiff verdicts were nearly double those of settlements ($2,525,000 vs. $1,300,000). A greater incidence of plaintiff verdicts was noted in cases in which a failure to treat (P < 0.05) was cited, a patient death occurred (P < 0.05), or an emergent surgery had been performed (P < 0.01). Conclusion.: Overall, physicians were not found liable in the majority of spine surgery malpractice cases queried. Level of Evidence: 4

1 September 2017 in World Neurosurgery
Verified
Journal Article
Closed access
AKAhmed Kashkoush
Ahmed Kashkoush
Arpan PrabhuArpan Prabhu
Arpan Prabhu
DTDaniel Tonetti
Daniel Tonetti
NANitin Agarwal
Nitin Agarwal

1 November 2016 in International Journal of Radiation Oncology - Biology - Physics (IJROBP)
Verified
Journal Article
Closed access
Arpan PrabhuArpan Prabhu
Arpan Prabhu
DHDavid R. Hansberry
David R. Hansberry
NANitin Agarwal
Nitin Agarwal
DCDavid A. Clump
David A. Clump
DHDwight E. Heron
Dwight E. Heron