Allan Covens

Dr. Allan Covens


Research Focus & Metrics

Academic Career Length

28Years (1999-Present)

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

Representative Publications

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1 January 2010 in Gynecologic Oncology
Verified
Journal Article
Closed access
LGL. Gortzak-Uzan
L. Gortzak-Uzan
WJW. Jimenez
W. Jimenez
SNS. Nofech-Mozes
S. Nofech-Mozes
NIN. Ismiil
N. Ismiil
MKM.A. Khalifa
M.A. Khalifa
ACAllan Covens
Allan Covens

1 June 2007 in Nature Clinical Practice Oncology
Verified
Journal Article
Closed access
MBMario E Beiner
Mario E Beiner
ACAllan Covens
Allan Covens

1 December 2008 in Journal of Surgical Oncology
Verified
Journal Article
Closed access
PDF file
LGL.T. Gien
L.T. Gien
ACAllan Covens
Allan Covens

21 October 2016 in Gynecologic Oncology Research and Practice
Verified
Journal Article
Open access
PDF file
KWKarla Willows
Karla Willows
GLGenevieve Lennox
Genevieve Lennox
ACAllan Covens
Allan Covens
Cervical cancer is the fourth most common cancer among women worldwide, many of who are still within their reproductive lifespan. Advances in screening and treatment have increased the 5-year survival for early stage disease to over 90 % in developed countries. The focus is now shifting to reducing morbidity and improving fertility outcomes for cervical cancer patients. Radical trachelectomy with lymph node assessment became the standard of care for selected women with lesions <2 cm who desire fertility preservation. However, several questions still remain regarding the degree of surgical radicality required for tumors <2 cm, and fertility-sparing options for women with early-stage disesase ≥2 cm, and those with more advanced disease. Here, we compile a narrative review of the evidence for oncologic and pregnancy outcomes following radical trachelectomy, non-radical fertility-sparing surgery, and the use of neoadjuvant chemotherapy prior to surgery for larger lesions. We also review the literature for assisted reproductive technologies in women with more advanced disease. Available literature suggests that the crude recurrence and mortality rates after radical trachelectomy are <5 and <2 %, respectively (approx. 11 and 4 % for tumors ≥ 2 cm). Among 1238 patients who underwent fertility-sparing surgery for early cervical cancer there were 469 pregnancies with a 67 % live birth rate. Among 134 cases with lesions ≥ 2 cm, there were ten conceptions with a live birth rate of 70 %. Outcomes after non-radical surgery (simple trachelectomy or cervical conization) are similar, although only applicable among a highly selected patient population. For patients ineligible for fertility-preserving surgery or who require adjuvant radiation therapy, current options include ovarian transposition and cryopreservation of oocytes or embryos but other techniques are under investigation. Today, many cervical cancer survivors have successful pregnancies. For those with early-stage disease, minimally invasive and fertility sparing techniques have resulted in improved obstetrical outcomes without compromising oncologic safety. Results from three ongoing trials on non-radical surgery for low-risk tumors <2 cm will further inform the need for radical surgery in such patients. For those in whom natural childbearing is unachievable, advances in assisted reproductive technologies provide reproductive options. Despite our advances, the effects of cervical cancer survivorship on quality of life are not fully elucidated.

20 August 2007 in Cancer
Verified
Journal Article
Open access
PDF file
JHJan Hauspy
Jan Hauspy
MBMario Beiner
Mario Beiner
IHIan Harley
Ian Harley
LELisa Ehrlich
Lisa Ehrlich
GRGolnar Rasty
Golnar Rasty
ACAllan Covens
Allan Covens
BACKGROUND.: The aim of the study was to assess the feasibility, efficacy, and accuracy of the sentinel lymph node (SLN) procedure in vulvar cancer.METHODS.: From April 2004 to September 2006, all patients with vulvar cancer, clinical stages I and II, underwent SLN detection, followed by a complete inguinofemoral lymphadenectomy. Demographic, surgical, and pathologic data on all patients were prospectively entered in a database.RESULTS.: Forty‐two patients underwent the SLN procedure. One patient was excluded from further analysis due to metastases to the vulva. The detection rate for at least 1 SLN per patient was 95%, with bilateral SLNs detected in 46% of patients. There was a trend toward improved ability to detect bilateral SLNs and proximity of the cancer to the midline (r= 0.996;P= .057). No contralateral SLNs were identified in patients with lateral vulvar lesions (>1 cm from the midline). For ‘close‐to‐midline’ (≤1 cm from the midline) lesions, SLNs were detected in 93% of ipsilateral groins and bilateral SLNs were found in 46% of patients, whereas lesions abutting the midline had unilateral and bilateral SLN detected in 100% and 93%, respectively. Sixteen of 41 patients (39%) and 18 of 68 groins (26%) revealed metastatic disease in the lymph nodes; all were correctly identified by the SLN procedure. There were no false‐negative SLN results.CONCLUSIONS.: SLN dissection is feasible and safe to perform in vulvar cancer. The ability to identify bilateral sentinel inguinal lymph nodes appears to be related to the proximity of the vulvar cancer to the midline. Cancer 2007. © 2007 American Cancer Society.

1 January 2017 in Gynecologic Oncology
Verified
Journal Article
Closed access
GLGenevieve K. Lennox
Genevieve K. Lennox
ACAllan Covens
Allan Covens