Colorectal Surgery
MD, FACS, FASCRS Chief, ColonRectal Surgery, Main Line Health Care Program Director, National Accreditation Program for Rectal Cancer, Lankenau Medical Center Executive Committee, National Accreditation Program for Rectal Cance Program Director…
Dr. John H. Marks, MD is a Professor at the Lankenau Institute for Medical Research, Chief of Colorectal Surgery at Main Line Health, and the Director of Fellowship in Laparoscopic and Minimally Invasive Colorectal Surgery and Advanced Rectal Cancer Management at Main Line Health.
Selected publications from PubMed
Colorectal Surgery: Advances in Minimally Invasive and Robotic Techniques.
Marks JH, Vu BK, Liu S, Nagle D
Surg Clin North Am. 2026 Oct;106(5):733-746 doi: 10.1016/j.suc.2026.02.013.
Robotic versus Laparoscopic Colectomy for Cancer.
Moscovici A, Bogaczyk T, Vu B, Marks J
Adv Surg. 2026 Sep;60(1):1-14 doi: 10.1016/j.yasu.2026.03.001.
Single-port robotic colorectal resection: outcomes in 138 consecutive patients.
Moscovici A, Bogaczyk T, Ton HA, Marks JH
J Robot Surg. 2026 Aug 26;20(1) pii: 892. doi: 10.1007/s11701-026-03863-y.
What is the rate of incisional hernia? Analysis of initial 100 single-port robotic colorectal procedures.
Moscovici A, Bogaczyk T, Booty J, Ton HA, Marks JH
Surg Endosc. 2026 Aug 20 doi: 10.1007/s00464-026-13108-6.
Clinical Recommendations for Remote Robotic Assisted Surgery From the CRSA 2025 International Consensus Conference.
Fong Y, Raptis DA, Kavoussi L, Wren SM, Fowler D, Anvari M, Bianco F, Liang X, Li Z, Yin X, Piccoli M, Aldousari S, Marks J, Shen B, Ko C, Ruurda J, Seeliger B, Hagendoorn J, Essani R, Walsh RM, Oleynikov D, Jones SB, Bindal V, Kim HK, Hyung WJ, Melstrom L, Hashimoto D, Celotto F, Chen LL, Burt BM, Lafaro K, Elli F, Kudsi Y, Ratti F, Wilson E, Bianchi PP, Morgan A, Bartlett ST, Rashidi L, Yu L, Gawkins B, Hinoul P, Peine B, Woo Y, Raoof M, Jones D, Deshpande S, Bernard J, Wang Y, Broering DC, Giulianotti PC
World J Surg. 2026 Aug;50(8):2274-2288 doi: 10.1002/wjs.70468.
One of the main surgical complications is operative bleeding. It is often caused by injury to blood vessels, and severe hemorrhage coming from major vascular structures. But it can also occur in wrong dissection planes or layers during the procedure. Anatomical knowledge and identifying anatomical landmarks remain crucial factors in preventing operative bleeding. Effective exposure of visual fields is a key strategy for preventing severe bleeding during surgery. The concept of Complete Mesocolic Excision comes with a more meticulous D3 dissection, seeking apical lymph nodes with Central vascular ligation (CVL). This technique is thought to have oncologic advantages, but also a higher risk of vascular injuries. All the more reason to have detailed vascular anatomical knowledge and a sound surgical technique. Understanding the tissue, device and technology interaction, particularly an energy device, play key roles in operations. But even though these devices are mainstays when performing a procedure and also used to reduce blood loss, they can, however, also be the cause of inadvertent injury if not properly handled. Left colectomy with selective vascular preservation will be demonstrated, giving some tips and tricks of oncologic principles and on the identification of key structures and planes to carry out the procedure.
With Johnson & Johnson MedTech
Published
Apr 2022
Dr. Antonio M. Lacy, Dr. Alberto Arezzo, Dr. Delia Cortes, Dr. Daniel Hashimoto, Dr. Salva Morales, Dr. Debby Keller, Dr. Venkatesh Munikrishnan, Dr. John Marks, Dr. Pietro Valdastri and Dr. Richard J. Heald present The Future of Colorectal Surgery.
With Stryker
Published
Dec 2020
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