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Dive into the research topics where Vaagn Andikyan is active.

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Featured researches published by Vaagn Andikyan.


International Journal of Gynecological Cancer | 2014

Cervical conization and sentinel lymph node mapping in the treatment of stage I cervical cancer: is less enough?

Vaagn Andikyan; Fady Khoury-Collado; J. Denesopolis; Kay J. Park; Yaser R. Hussein; Carol L. Brown; Yukio Sonoda; Dennis S. Chi; Richard R. Barakat; Nadeem R. Abu-Rustum

Objectives This study aimed to determine the feasibility of cervical conization and sentinel lymph node (SLN) mapping as a fertility-sparing strategy to treat stage I cervical cancer and to estimate the tumor margin status needed to achieve no residual carcinoma in the cervix. Methods We identified all patients who desired fertility preservation and underwent SLN mapping with cervical conization for stage I cervical cancer from September 2005 to August 2012. Relevant demographic, clinical, and pathologic information was collected. Results Ten patients were identified. Median age was 28 years (range, 18–36 years). None of the patients had a grossly visible tumor. The initial diagnosis of invasive carcinoma was made either on a loop electrosurgical excision procedure or cone biopsy. All patients underwent preoperative radiologic evaluation (magnetic resonance imaging and positron emission tomography–computed tomography). None of the patients had evidence of gross tumor or suspicion of lymph node metastasis on imaging. Stage distribution included 7 (70%) patients with stage IA1 cervical cancer with lymphovascular invasion and 3 (30%) patients with microscopic IB1. Histologic diagnosis included 8 (80%) patients with squamous cell carcinoma, 1 (10%) patient with adenocarcinoma, and 1 (10%) patient with clear cell carcinoma. Nine patients underwent repeat cervical conization with SLN mapping, and 1 patient underwent postconization cervical biopsies and SLN mapping. None of the patients had residual tumor identified on the final specimen. The median distance from the invasive carcinoma to the endocervical margin was 2.25 mm, and the distance from the invasive carcinoma to the ectocervical margin was 1.9 mm. All collected lymph nodes were negative for metastasis. After a median follow-up of 17 months (range, 1–83 months), none of the patients’ conditions were diagnosed with recurrent disease and 3 (30%) patients achieved pregnancy. Conclusions Cervical conization and SLN mapping seems to be an acceptable treatment strategy for selected patients with small-volume stage I cervical cancer. Tumor clearance of 2 mm and above seems to correlate well with no residual on repeat conization. A larger sample size and longer follow-up is needed to establish the long-term outcomes of this procedure.


Oncologist | 2015

Age-Stratified Risk of Unexpected Uterine Sarcoma Following Surgery for Presumed Benign Leiomyoma

Andrew Scott Brohl; Li Li; Vaagn Andikyan; Sarah Običan; A. Cioffi; Ke Hao; Joel T. Dudley; C. Ascher-Walsh; Andrew Kasarskis; Robert G. Maki

BACKGROUND Estimates of unexpected uterine sarcoma following surgery for presumed benign leiomyoma that use age-stratification are lacking. PATIENTS AND METHODS A retrospective cohort of 2,075 patients that had undergone myomectomy was evaluated to determine the case incidence of unexpected uterine sarcoma. An aggregate risk estimate was generated using a meta-analysis of similar studies plus our data. Database-derived age distributions of the incidence rates of uterine sarcoma and uterine leiomyoma surgery were used to stratify risk by age. RESULTS Of 2,075 patients in our retrospective cohort, 6 were diagnosed with uterine sarcoma. Our meta-analysis revealed 8 studies from 1980 to 2014. Combined with our study, 18 cases of leiomyosarcoma are reported in 10,120 patients, for an aggregate risk of 1.78 per 1,000 (95% confidence interval [CI]: 1.1-2.8) or 1 in 562. Eight cases of other uterine sarcomas were reported in 6,889 patients, for an aggregate risk of 1.16 per 1,000 (95% CI: 0.5-4.9) or 1 in 861. The summation of these risks gives an overall risk of uterine sarcoma of 2.94 per 1,000 (95% CI: 1.8-4.1) or 1 in 340. After stratification by age, we predict the risk of uterine sarcoma to range from a peak of 10.1 cases per 1,000, or 1 in 98, for patients aged 75-79 years to <1 case per 500 for patients aged <30 years. CONCLUSION The risk of unexpected uterine sarcoma varies significantly across age groups. Our age-stratified predictive model should be incorporated to more accurately counsel patients and to assist in providing guidelines for the surgical technique for leiomyoma.


Gynecologic Oncology | 2012

Extended pelvic resections for recurrent or persistent uterine and cervical malignancies: An update on out of the box surgery

Vaagn Andikyan; Fady Khoury-Collado; Yukio Sonoda; Scott R. Gerst; K.M. Alektiar; J.S. Sandhu; Bernard H. Bochner; Richard R. Barakat; Patrick J. Boland; Dennis S. Chi

OBJECTIVE To update our report on the outcome of patients who underwent extended pelvic resection (EPR) for recurrent or persistent uterine and cervical malignancies. METHODS We reviewed the records of all patients who underwent EPR between 6/2000 and 07/2011. EPR was defined as an en-bloc resection of a pelvic tumor with sidewall muscle, bone, major nerve, and/or major vascular structure. Complications up to 180 days post surgery were analyzed. Survivals were estimated using the Kaplan-Meier method. RESULTS We identified 22 patients. Median age at the time of EPR was 58 years (range, 36-74). Median tumor diameter was 5.4 cm (range, 1.5-11.2). Primary tumor sites included: uterus, 13; cervix, 7; synchronous uterus/cervix, 1; and synchronous uterus/ovary, 1. The EPR structures were: muscle, 13; nerve, 10; bone, 8; vessel, 5. Complete gross resection with microscopically negative margins (R0 resection) was achieved in 17 patients (77%). There were no perioperative mortalities. Major postoperative complications occurred in 14 patients (64%). The two most common morbidities were pelvic abscesses and peripheral neuropathies. Median follow-up time was 28 months (range, 6-99). The 5-year overall survival (OS) for the entire cohort was 34% (95% CI, 13-57). For the 17 patients who had an R0 resection, the 5-year OS was 48% (95% CI, 19-73). In patients with positive pathologic margins (n=5), the 5-year OS was 0%. CONCLUSION EPR was associated with prolonged survival when an R0 resection was achieved. The high rate of postoperative complications remains a hallmark of these procedures and properly selected patients should be extensively counseled preoperatively.


Gynecologic Oncology | 2013

The value of 18F-FDG PET/CT in recurrent gynecologic malignancies prior to pelvic exenteration.

Irene A. Burger; Hebert Alberto Vargas; Olivio F. Donati; Vaagn Andikyan; Evis Sala; Mithat Gonen; Debra A. Goldman; Dennis S. Chi; Heiko Schöder; Hedvig Hricak

OBJECTIVE In patients undergoing pelvic exenteration for recurrent gynecological malignancies, we assessed the performance of [(18)F]-FDG PET/CT for delineating disease extent and evaluated the association between quantitative FDG uptake metrics (SUVmax, total lesion glycolysis [TLG] and metabolic tumor volume [MTV]) and progression-free survival (PFS) and overall survival (OS). METHODS Retrospective study of patients undergoing pelvic exenteration for gynecologic malignancies between January 2002 and November 2011 who had FDG PET/CT within 90days before surgery. Two readers (R1, R2) independently determined the presence of bladder, rectum, vagina, cervix and pelvic side wall invasion and measured SUVmax, TLG and MTV in each patient. Areas under the curve (AUCs), for detecting organ invasion were calculated. Kaplan-Meier graphs were used to determine associations between FDG uptake and PFS/OS. Inter-reader agreement was assessed. RESULTS 33 patients (mean age 56years, range: 28-81) were included; primary sites of disease were the cervix (n=18), uterus (n=8) and vagina/vulva (n=7). AUCs for organ invasion ranged from 0.74 to 0.96. There was a significant association between FDG uptake metrics incorporating tumor volume (TLG and MTV) and OS (p≤0.001) as well as between MTV and PFS (p=0.001). No significant association was identified between SUVmax and OS/PFS (p=0.604/0.652). Inter-reader agreement for organ invasion was fair to substantial (k=0.36-0.74) and almost perfect for FDG quantification (ICC=0.97-0.99). CONCLUSION In patients undergoing pelvic exenteration for recurrent gynecological malignancies, (18)F-FDG PET/CT is useful for preoperative assessment of disease extent. Furthermore, quantitative metrics of FDG uptake incorporating MTV serve as predictive biomarkers of progression-free and overall survival in this population.


Gynecologic Oncology | 2012

Anterior pelvic exenteration with total vaginectomy for recurrent or persistent genitourinary malignancies: Review of surgical technique, complications, and outcome

Vaagn Andikyan; Fady Khoury-Collado; Scott R. Gerst; S. Talukdar; Bernard H. Bochner; J.S. Sandhu; Nadeem R. Abu-Rustum; Yukio Sonoda; Richard R. Barakat; Dennis S. Chi

OBJECTIVE To describe the surgical technique, complications, and outcomes after anterior pelvic exenteration with total vaginectomy (AETV) for recurrent or persistent genitourinary malignancies. METHODS We reviewed the medical records of all patients who underwent AETV between 12/2002 and 07/2011. Relevant demographic, clinical, and pathological information was collected. Postoperative complications and rates of readmission and reoperation (up to 180 days after surgery) were examined, and preliminary survival data were obtained. RESULTS We identified 11 patients who underwent AETV. The median age at the time of the surgery was 55 years (range, 36-71). The median tumor size was 0.9 cm (range, microscopic - 4). Primary tumor sites included: cervix, 6; uterus, 3; vagina, 1; and urethra, 1. Complete surgical resection with negative pathologic margins was achieved in all 11 patients. Major postoperative complications occurred in 4 patients (36%). Six patients (55%) required readmission to the hospital. No operative mortalities were observed, and none of the patients required a re-operation. With a median follow-up after the procedure of 25 months (range, 6-95), none of the patients developed a pelvic recurrence. Ten patients (91%) were alive without evidence of disease and one patient (9%) developed a pancreatic recurrence. CONCLUSION AETV sparing the rectosigmoid and anus is feasible in highly selected patients with central pelvic recurrences. Compared to previously reported studies on total pelvic exenteration, data from this case series suggest that AETV may be associated with a lower rate of complications without compromising the oncologic outcome, while also preserving rectal function.


Gynecologic Oncology | 2016

Electronic patient-reported outcomes from home in patients recovering from major gynecologic cancer surgery: A prospective study measuring symptoms and health-related quality of life.

Renee A. Cowan; Rudy S. Suidan; Vaagn Andikyan; Youssef A. Rezk; M. Heather Einstein; Kaity Chang; Jeanne Carter; Oliver Zivanovic; Elizabeth J. Jewell; Nadeem R. Abu-Rustum; Ethan Basch; Dennis S. Chi

PURPOSE We previously reported on the feasibility of a Web-based system to capture patient-reported outcomes (PROs) in the immediate postoperative period. The purpose of this study was to update the experience of these patients and assess patient and provider satisfaction and feedback regarding the system. METHODS This is a prospective cohort study of patients scheduled to undergo laparotomy for presumed gynecologic malignancy. Patients completed a Web-based Symptom Tracking and Reporting (STAR) questionnaire preoperatively and weekly during a 6-week postoperative period. Email alerts were sent to study nurses when concerning patient responses were entered. The patient and the nurse assessments of STARs usefulness were measured via an exit survey. RESULTS The study enrolled 96 eligible patients. Of these, 71 patients (74%) completed at least four of seven total sessions. Of the patients who completed the exit satisfaction survey, 98% found STAR easy to use; 84% found it useful; and 82% would recommend it to other patients. Despite positive feedback from patients, clinical personnel found that the STAR system increased their current workload without enhancing patient care. CONCLUSIONS Application of an electronic program for PROs in those recovering from major gynecologic cancer surgery is feasible, and acceptable to most patients. While most clinicians did not find STAR clinically helpful, the majority of patients reported a positive experience with the system and would recommend its use. The program helped many patients feel more empowered in their postoperative recovery.


Gynecologic Oncology | 2015

Incorporation of postoperative CT data into clinical models to predict 5-year overall and recurrence free survival after primary cytoreductive surgery for advanced ovarian cancer

Irene A. Burger; Debra A. Goldman; Hebert Alberto Vargas; Michael W. Kattan; Changhon Yu; Lei Kou; Vaagn Andikyan; Dennis S. Chi; Hedvig Hricak; Evis Sala

PURPOSE The use of multivariable clinical models to assess postoperative prognosis in ovarian cancer increased. All published models incorporate surgical debulking. However, postoperative CT can detect residual disease (CT-RD) in 40% of optimally resected patients. The aim of our study was to investigate the added value of incorporating CT-RD evaluation into clinical models for assessment of overall survival (OS) and progression free survival (PFS) in patients after primary cytoreductive surgery (PCS). METHODS 212 women with PCS for advanced ovarian cancer between 01/1997 and 12/2011, and a contrast enhanced abdominal CT 1-7 weeks after surgery were included in this IRB approved retrospective study. Two radiologists blinded to clinical data, evaluated all CT for the presence of CT-RD, and Cohens kappa assessed agreement. Cox proportional hazards regression with stepwise selection was used to develop OS and PFS models, with CT-RD incorporated afterwards. Model fit was assessed with bootstrapped Concordance Probability Estimates (CPE), accounting for over-fitting bias by correcting the initial estimate after repeated subsampling. RESULTS Readers agreed on the majority of cases (179/212, k=0.68). For OS and PFS, CT-RD was significant after adjusting for clinical factors with a CPE 0.663 (p=0.0264) and 0.649 (p=0.0008). CT-RD was detected in 37% of patients assessed as optimally debulked (RD<1cm) and increased the risk of death (HR: 1.58, 95% CI: 1.06-2.37%). CONCLUSION CT-RD is a significant predictor after adjusting for clinical factors for both OS and PFS. Incorporating CT-RD into the clinical model improved the prediction of OS and PFS in patients after PCS for advanced ovarian cancer.


Gynecologic oncology reports | 2016

Squamous cell carcinoma of the vulva arising in the setting of chronic hidradenitis suppurativa: A case report

Patricia Rekawek; Shailja Mehta; Vaagn Andikyan; Marco A. Harmaty; K. Zakashansky

Highlights • Highlights the sheer mass of tumor encountered with hidradenitis suppurativa.• Reviews the complexity of wound healing with hidradenitis suppurativa.• Overview of multi-team approach to a vulvar cancer.


Gynecologic Oncology | 2013

Postoperative outcomes among patients undergoing thoracostomy tube placement at time of diaphragm peritonectomy or resection during primary cytoreductive surgery for ovarian cancer

Samith Sandadi; K. Long; Vaagn Andikyan; Jessica Vernon; Oliver Zivanovic; Eric L. Eisenhauer; Douglas A. Levine; Yukio Sonoda; Richard R. Barakat; Dennis S. Chi

OBJECTIVE Primary cytoreductive surgery in patients with stage IIIC-IV epithelial ovarian cancer frequently includes diaphragm peritonectomy or resection, which can lead to symptomatic pleural effusions when the resection specimen is ≥ 10 cm. Our objective was to evaluate whether the placement of an intraoperative thoracostomy tube decreased the incidence of symptomatic pleural effusions in these cases. METHODS We identified 156 patients who underwent primary debulking surgery involving diaphragm peritonectomy or resection for stage III-IV ovarian cancer from 1/01-12/09. Using standard statistical tests, the incidence of symptomatic pleural effusions and other variables were compared between patients who did and did not have intraoperative chest tubes placed. RESULTS Forty-nine patients had a resected diaphragm specimen ≥ 10 cm in largest dimension; 28 (57%) did not undergo chest tube placement (NCT group) while 21 (43%) did (CT group). Mediastinal lymph node dissection (0% vs 19%, P = 0.028) and liver resections (11% vs 38%, P = 0.037) were higher in the CT group. Postoperatively, 57% of the NCT group developed a moderate or large pleural effusion compared to 19% of the CT group (P = 0.007). Thirteen patients (46%) in the NCT group developed respiratory symptoms requiring either placement of a postoperative chest tube or thoracentesis compared to 3 patients (14%) in the CT group (P = 0.018). CONCLUSIONS Diaphragm peritonectomy or resection can often lead to moderate or large pleural effusions that may become symptomatic. In these patients, intraoperative chest tube placement may be considered to decrease the incidence of symptomatic effusions and the need for postoperative chest tube placement or thoracentesis.


Gynecologic oncology case reports | 2013

A case report of vulvar carcinoma in situ treated with sinecatechins with complete response.

Natasha Gupta; Ernesto Rodriguez; Vaagn Andikyan; Stacy Salob; Dennis S. Chi

Highlights • Usual-type VIN is an HPV-associated premalignant condition that can affect immunocompromised patients and may have multifocal, multicentric involvement.• Immunocompromised patients who may be poor surgical candidates, and in whom topical modalities may prove ineffective, treatment remains a challenge.• We present such a patient in whom sinecatechin was successfully used as an alternative to less desired and effective treatment options.

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Dennis S. Chi

Memorial Sloan Kettering Cancer Center

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Fady Khoury-Collado

Memorial Sloan Kettering Cancer Center

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Richard R. Barakat

Memorial Sloan Kettering Cancer Center

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Herbert Gretz

Icahn School of Medicine at Mount Sinai

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K. Zakashansky

Icahn School of Medicine at Mount Sinai

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Yukio Sonoda

Memorial Sloan Kettering Cancer Center

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David A. Fishman

Icahn School of Medicine at Mount Sinai

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Jessica Fields

Icahn School of Medicine at Mount Sinai

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Nadeem R. Abu-Rustum

Memorial Sloan Kettering Cancer Center

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Sara Farag

Icahn School of Medicine at Mount Sinai

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