« Le Confluent » is a leading private group of hospitals, led by a physician shareholder and governance system, with an excellent reputation for delivering high quality healthcare treatments and services in Nantes and its region (Pays de la Loire – West of France).

The group Le Confluent is the union of two private hospitals, formed in 1998, by a desire to share the means and skills to create a multipurpose and attractive healthcare institution specializing in surgical and cardiological medicine.

The group « Le Confluent » includes:

  • Le Confluent-Nouvelles Cliniques Nantaises, a hospital specializing in surgery, cardiology, internal medicine, and emergencies
  • Le Centre Catherine de Sienne, a hospital specializing in the diagnosis and treatment of cancers.

Le Confluent is an independent groupof nearly 200 health practitioners , all working on site. It has two major objectives:

  • To combine skills and technical knowledge to strengthen and achieve high-quality care
  • To coordinate better care, particularly for patients suffering from cancer

Le Confluent has 1,000 staff members, 200 of which are physicians, and 500 regular and short-stay beds. In 2014 there were 57,000comprehensive or ambulatory hospitalisations with up to 200 interventions a day. There were 16,000 chemotherapy sessions, 45,000 radiotherapy sessions, and more than 150,000 consultations on the site.

Le Confluent healthcare services manage more than 30 operative units in five programs :

  • Surgery
  • Cardiology
  • Geriatrics, Gynecology, Traumatology, Rheumatology, Neurology, Internal and infection medicine, Hepatho-gastroentherology
  • Oncology
  • Radiology and medical imagery

In the latest rankings of French Hospitals by the ‘Le Point’ magazine, the most important independent classification of Private and Public Health care institutions in France,Le Confluent –  Nouvelles Cliniques nantaises was ranked in the top 50 hospitals in the country. It was also ranked highly in the following areas on a national base:

Treatments for the cancers:

  • Breast (1)
  • Colon (7)
  • Thyroid (8)
  • ENT (8)

Bone and joint surgery:

  • Should surgery (11)
  • Hip Prosthesis (24)

Digestive surgery :

  • Abdomen hernia (1)
  • Gall bladder (8)
  • Appendicitus (15)

Vascular surgery

  • Varicose veins (9)


  • Pacemaker (2)
  • Myocardial infarction (13)


  • Back surgery (22)

Head & neck:

  • Hearing (7)
  • Dental surgery (11)
  • Tonsil (18)
  • Salivary gland (20)

Breathing illness

  • Pneumonology (6)

source: the leading French weekly newsmagazine Le Point’s “2017 FRENCH BEST PRIVATE HOSPITALS” (Le Point’s hospital ranking is an established and influential one and presents an annual report of France’s hospitals and health care providers.)


Le Confluent received certification in 2012 from the High Authority of Health (HAS) for the private hospital of Nantes and in 2013 for the Catherine of Siena Center.

The HAS is an independent public authority that contributes to the quality and regulation of the health system. Its missions are to evaluate health products and professional practices and to manage public health and care.


HAS V2010 Certification (2012 – MAJ December 2013)

Complete report :

Certificate :


HAS V2010 Certification (Avril 2013 – MAJ Avril 2014)

The Confluent group is one of the largest hospital complexes of the Pays de la Loire (west of France) region. With more than 500 hospital beds and 57,000 inpatients admitted in 2014, it is the most important healthcare facility of Nantes (the sixth most important and populated town in France in 2014).

It specializes in diagnosis and treatment in the areas of:

  • Cardiology
  • Oncology
    • Radiotherapy
    • Nuclear medicine
    • Chemotherapy
    • Full hospitalisation
  • Surgery
    • cancer surgery
    •  digestive, thoracic, gynecological and surgery in endocrinology and proctology
    • Hand and wrist
    • orthopedic (spinal column, hip-knees, foot, shoulder-elbow)
    • vascular system
    • restorative
    •  stomatology and implant
    • maxillofacial
    • ocular and laser angiography
    • ENT, face, and neck
    • urological
  • Radiology and medical imagery
  • Gastroenterology
  • Internal medicine and infectiology
  • Pneumology and respiratory allergy
  • Angiology
  • Geriatric
  • Gynecology
  • Sport traumatology
  • Rheumatology
  • Neurology
  • Hepatology

More details about main departments:


  • Cardiology in the Confluent is divided into 4 medical departments:
  • Cardiology medicine and interventional cardiology
  • Cardiovascular exploration
  • Cardiological consultation
  • heart tolerance test

Cardiological medicine and interventional cardiology

Le Confluent’s cardiology practitioners treat pathologies belonging to the following fields: interventional cardiology, coronarography, coronary dilation, rythmology, cardiac defibrillation, and stress ultrasound.

The care unit in interventional cardiology consists of a cardiological intensive care unit, a sector of hospitalisation with telemetric supervision, a technical unit of rythmology, and an interventional cardiology unit. This unit works in association with the radiologists and imaging section (MRI and cardiac scanner) of Le Confluent.

Patient educational therapy (PET)

The interventional cardiology care unit has developed an educational program on the prevention of coronary disease and its risk factors. It functions in association with the network « Respecti-Coeur » for the management of patients with a cardiac insufficiency or a coronary disease.

The noninvasive cardiovascular procedures practiced in Le Confluent are:

  • Heart tolerance test.
  • Transthoracic echocardiography
  • Transesophageal echocardiography
  • Vascular echo-doppler


The Catherine de Sienne Center (CSC) of the Le Confluent group offers care dedicated to cancer research and treatment. Being one of the first private cancer research centers in France, it offers the following specialities:

  • Oncology, hematology and chemotherapy
  • Algology, pain evaluation and treatment
  • Nuclear medicine
  • Radiotherapy
  • CSC has the following departments:
  • Full hospitalisation services, including a palliative care unit
  • A day chemotherapy department
  • A chemotherapy unit in the Jules Verne Center
  • A radiotherapy unit
  • CSC also offers oncogenetic consultations.

The CSC medical team consists of 5 oncologists (including 2 hematologists), 3 algologists, 5 doctors in nuclear medicine, and 5 radiotherapists. This team is supported by a set of professional, onsite and auxiliary nurses and by administrative, technical, and IT staff.

CSC is also a certified Center of Coordination in cancer research by the Regional Agency of Health of Pays de la Loire. Consequently, it leads a network of health establishments and is authorized to be in charge of cancer patients.


Le Confluent’s surgical team covers 12 specialties:

  • Cancer surgery
  • Digestive – thoracic surgery, endocrinology, proctology, gynecological and breast surgery
  • Hand and wrist surgery
  • Orthopaedic surgery :                      
    • Spine
    • Hip – Knee – Foot
    • Shoulder – elbow
  • Vascular surgery :
    • Arteries and veins
    • Varicose veins
    • Vascular hemodialysis
  • Plastic and reconstructive surgery
  • Stomatology surgery and implantology
  • Maxillofacial surgery
  • Ocular surgery and oculaire et laser angiography
  • ENT, head and neck surgery
  • Urolog
  • Peripheral nerves neurosurgery

Surgery of the spine

The Rachis Nantes Center (RNC) is a department of Confluent-Nouvelles Cliniques Nantaises, specializing in the treatment of the spine. The conditions treated at the RNC can be in the cervical, dorsal floor, and the lumbar vertebra, both in the degenerative domain and in the traumatic and tumoral domain.

A particular strength of the center is the treatment of the rachis distortions in children and adults (scoliosis, cyphose).

The practitioners of the RNC use innovative surgical techniques (mini-invasive, percutaneous, endoscopy, 3D navigation, cimentoplasty, discopathy, prosthesis weight loss) supported by an array of state-of-the-art imaging techniques.

The patients of the center receive lasting treatments and can access emergency surgery of the vertebral column by three specialized surgeons 24/7.

The RNC is gaining a reputation thanks to a close collaboration with the Catherine de Sienne Center, the oncology team for the treatment of the rachis tumoral conditions, and the team at the pain management clinic.

Orthopedic surgery

The team of orthopedics – traumatology takes care of all the musculoskeletal conditions of adults and children.

This team’s 11 highly professional surgeons perform orthopedic and traumatological surgery. They are also senior scholars at teaching hospitals. They form an association of orthopedic surgeons in Pays de la Loire (AOL) who have top specializations.

The department performs:

  • Upper limb surgery: shoulder-elbow
  • Lower limb surgery: hip-knee-foot
  • Spinal column surgery
  • Trauma surgery

Urological surgery

Le Confluent-Nouvelles Cliniques Nantaises services include:

  • the treatment of urological cancers (kidney, ureter, bladder, prostate, testicle)
  • laparoscopic surgery for the following:
    • diseases connected to the calculations (lithiasis) and renal colics
    • urinary incontinence and prolapse in women
    • children’s urological conditions
    • functional disorders of the lower urinary organs, in particular those connected to the prostate


Le Confluent-Nouvelles Cliniques Nantaises medical team has extensive experience in the treatment of neurological diseases, such as:

  • Deficits of memory and language; confusions and behavior disorders (Alzheimer’s diseases)
  • Headaches
  • Faintness and loss of consciousness (epilepsy)
  • Walking disorders; shivers and involuntary movements (Parkinson’s disease)
  • The paralysis or the loss of sensibility of a member; the infringement of cranial nerves (view, hearing, olfaction, gulp), ischemic accidents or more extended (multiple sclerosis, AVC)
  • Pains and dullnesses (carpal canal syndrome, sciatica, neuropathies)
  • Cramps, aches, and muscular weaknesses (myopathies, myasthenia)


The gastroenterologists of Le Confluent are active in the the diagnosis, treatment, and prevention of cancer (colon screening) and coordinate with the other specialties (digestive surgery, cancer research). They perform endoscopic examinations of various segments of the digestive tract, which allows them to diagnose and treat digestive diseases

Examinations and treatments can include:

  • colonoscopy
  • fiberscopy
  • ablation of residual calculations
  • use of a stomach tube for endoscopic feeding


The radiologists at Le Confluent are members of the Iris Grim group, which is a team of 36 radiologists with expertise in all the specialities of medical imaging.

The hospital has 12 rooms for conventional radiology, 8 image intensifier, and 2 mobile radiological devices. This important equipment allows the institution to fulfill all the routine requests and to perform service in emergencies.


The senology service has sophisticated equipment dedicated to the diagnosis, treatment, and supervision of breast diseases:

  • 2 mammography rooms, both of which make use of full-field digital mammography, including one with a tomosynthesis system
  • 1 room of interventional mammography
  • 1 digitized screen-film mammography (dSFM) imaging chain
  • 2 advice centers, two of which are equipped with dedicated echographs

The technical facilities for imaging system is ideally located between the Catherine de Sienne Center and The Nouvelles Cliniques Nantaises, and provide 2 scanners and 2 MRI apparatus.


The power of our devices allows for very short examinations, which alleviates the claustrophobia that some patients feel. The power of the magnet (1,5 tesla) meets the needs for all clinical applications presently in use, including the latest developments in cancer research and in cardiovascular pathology. The MRI is not irradiant (no X-rays) but still requires that certain contraindications be respected (someone with a pacemaker should not have such an examination). The time inside the machine varies from 20 to 30 minutes according to the type of examination.


The scanner is a multi-detector system with a ultra-fast rotation (a rotation in less than 0,5 second, which allows the equivalent of 32 cuts in a second). This speed is at a security level, not only for optimal imaging, but especially because this speed is more comfortable for tired patients: the patient rest time is lengthened to less than 5 minutes under the device. The very short time of acquisition allow for good quality examinations even with agitated patients or patients with pain.


The radiology center is equipped with 5 echographs including 4 of the latest generation.

All of them have color Doppler image. One of these echographs, light and powerfull, allows examination at the patient’s bedside.


The technical room of external radiotherapy at the Catherine de Sienne Center is equipped with:

  • 4 particle accelerators equipped with a portal imager and with collimator multi-blades
  • 2 accelerators that can deliver conformational radiotherapy by modulation of intensity (RCMI or IMRT)
  • 1 accelerator, equipped with an « On Board Imager » (embarked imaging), that can carry out irradiations with modulation of volumetric intensity by arc therapy (VMAT or Rapid Arc),
  • 1 scanner dedicated to radiotherapy with wide rings to realize the centering, mobile lasers that allow simulation of beams of irradiation on the patients
  • Planning software for the processing of treatments (TPS) from conformational 3D dosimetry, IMRT, and Rapid Arc
  • A software that fuses the conventional images from a scanner, MRI, Fart-scan
  • An information system that processes a patient’s whole experience from admission to the end of treatments
  • A technical room for personalized masks
  • A recording and checking parameters system ( » Record and verify  » or R*V), which guarantees transmission of individual treatment data on accelerators and records automatically every session of irradiation

Le Confluent group includes 6 clinical research experts in charge of setting up and monitoring clinical trials in cardiology and cancer.

The department of interventional cardiology of Confluent-Nouvelles Cliniques Nantaises is one of the largest and most proactive research departments in this field.

It revealed recently two major technological developments: the use of a new cardiac trans-catheter valve, implanted without surgery, and the use of a bio-absorbable stent.

  • An aortic trans-catheter valve as an alternative to conventional surgery

The practitioners of Le Confluent report that their first experience with the new valve, SAPIENS III, has been very positive, and they confirm the excellent performance of the device, which has already been reported within the framework of international clinical trials recently published on the subject.

This valve is used for the treatment of patients suffering from severe symptomatic aortic stenosis (shrinkage) who are ineligible for open-heart surgery.

This new generation of trans-catheter valve is endowed with two major technological breakthroughs:

  • the presence of an external cloth skirt that assures the waterproofness of the device once implanted in the aortic valve
  • significant reduction of the diameter of the expansible initiator inserted into the femoral artery in the fold of the groin, allowing for its use in more than 80% of patients

A new-generation, totally bio-absorbable stent

The medical team of interventional cardiology at Le Confluent has been able to implant for the first time a totally bio-absorbable endocoronary (or stent) prosthesis in two young patients.

Used in the case of coronary-artery shrinkage, , the active stents, in place of metallic stents, are a new generation of polylactite absorbable acid stent covered with an anti-restenosis molecule. These stents are one of the major (r)evolutions in the management of coronary disease.

The new stents offer substantial advantages over the previous-generation stents: the complete dissolution or the biodegradation in two years; the reduction of irritation and inflammation of the vessel; the possibility of shortening the duration of the platelet anti-agregant treatment; and finally, the possibility for noninvasive, follow-up coronary imaging (MRI or scanner).

Its efficiency and safety are in the process of evaluation at Le Confluent in a national report.