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Rolling admission · Istanbul · Delivered in English

Endoscopic Ultrasound (EUS) Observership endosonographic imaging, staging and tissue diagnosis in Istanbul

Follow how endosonographers read real-time ultrasound images from within the stomach and duodenum, characterise pancreatic and wall lesions and decide when tissue is needed — observing diagnostic EUS on the days the unit lists it within your placement.

  • Gastroenterology
  • Observership 1–4 weeks
  • Fellowship 12–24 months
  • English-medium · proof required
Procedure room prepared for a clinical case
Routes
Observership 1–4 weeks · Fellowship 12–24 months
Format
Observation only — no patient contact
Language
English, with official proof of level
Location
University teaching hospital, Istanbul
Admission
Rolling — apply 3–6 months ahead
Certificate
Attendance (observership) · completion (fellowship)

What can an observer follow in Endoscopic Ultrasound (EUS)?

What you see depends on the department's clinical calendar during your placement; the list below describes the department's usual scope, not a guaranteed programme.

  • Diagnostic EUS sessions where scheduled, with the endosonographer explaining stations, anatomy and image findings on the processor screen as the examination proceeds
  • Pancreatic assessment: solid masses, cystic lesions and features of chronic pancreatitis, and how EUS findings are read against CT and MRI
  • Subepithelial lesions of the oesophagus, stomach and duodenum: layer of origin, echo features and the choice between surveillance, sampling and referral
  • Locoregional staging of selected gastrointestinal and pancreatic tumours, including vascular contact and regional lymph nodes
  • EUS-guided fine-needle aspiration or biopsy where a listed case calls for it: when tissue changes management and how a target is chosen
  • Interventional EUS, such as pancreatic fluid collection or biliary drainage: only where the department performs it during your dates — confirmed after review
  • The hepatobiliary multidisciplinary meeting, where EUS and sampling results feed into resection, surveillance or systemic treatment decisions

When does endoscopic ultrasound change the management plan?

EUS earns its place when it answers a question that CT or MRI cannot. In a suspected pancreatic tumour, it can detect small lesions, define contact with the portal–superior mesenteric venous axis and the arteries, and provide tissue. Tissue is essential before neoadjuvant or palliative chemotherapy, whereas a clearly resectable lesion may proceed to surgery without it, depending on the multidisciplinary team's view. For a patient with an intermediate probability of bile duct stones, EUS can confirm or exclude them and spare an unnecessary ERCP. Observers hear the referring question stated before each examination, which frames everything that follows.

Pancreatic cysts and subepithelial lesions illustrate a second kind of decision: whether to sample, survey or refer for resection. For cysts, morphology, mural nodules, duct communication and, where aspirated, fluid analysis are weighed against guideline-defined worrisome features and the patient's fitness for surgery. For subepithelial lesions, the wall layer of origin and echo pattern narrow the differential, and sampling is considered when a gastrointestinal stromal tumour is suspected. These are judgement calls rather than protocols, and the discussion around them is often as instructive as the images themselves.

The team around a diagnostic EUS list differs from an ERCP room. There is usually no fluoroscopy; the endosonographer interprets a moving ultrasound image that the observer gradually learns to orientate, endoscopy nurses prepare needles and handle specimens, and the sedation team manages the airway. Where the unit works with on-site cytological assessment, a pathologist or cytotechnician judges adequacy in the room; otherwise the specimen travels to pathology and the answer returns days later, often at the multidisciplinary meeting. Interventional EUS often adds fluoroscopy and a larger team.

How this page differs

Where the ERCP page is about therapy under fluoroscopy — clearing ducts, sampling strictures and placing stents — this page is about seeing and characterising: endosonographic imaging, staging and tissue diagnosis. The parent gastroenterology page covers the department as a whole, and mediastinal nodal staging for lung cancer sits more naturally with the interventional pulmonology and EBUS focus.

Who applies, and which route fits?

Clinical Observership

Graduate physicians and gastroenterology or internal medicine trainees who want to understand how EUS findings are read and acted on; prior familiarity with cross-sectional abdominal imaging makes the sessions far easier to follow.

Clinical Fellowship

Gastroenterologists with a specialist qualification who name endosonography as their interest; the attachment remains a gastroenterology one, the department sets the allocation, and EUS lists are combined with clinics and the multidisciplinary meeting.

What an observer does not do

Both routes are strictly observational: observers attend theatre and clinic without patient contact, do not scrub or assist, and are not assessed on any procedure.

  • Interventional EUS is not named in the department's published scope; it is followed only where the department performs it during your dates — confirmed after review.
  • No handling of the echoendoscope, needles or specimens, and no control of the ultrasound processor.
  • Pathology results arrive after the session and observers do not access patient records, so following a sample to its final report depends on the meeting calendar.
  • Observation cannot be counted towards EUS case numbers or competence, and no EUS-specific certificate is issued.

The two routes at a glance

The two routes side by side
Clinical ObservershipClinical Fellowship
Duration1, 2 or 4 weeks (extension possible on request)12 to 24 months, agreed with the host department
Who it is forMedical students in clinical years and graduate physicians from outside TurkeyRecognised specialists and family physicians seeking advanced exposure beyond standard specialty training
FormatFull-time, strictly observational — outpatient clinics, operating theatre, ward rounds, case discussionsExtended observational attachment to one department: daily practice, service structure and specific techniques
CertificateCertificate of attendance issued by the host hospital and signed by its Medical DirectorCertificate on completion issued under the accreditation of the affiliated university school of medicine
StartRotations typically begin on a Monday; dates are agreed individuallyStart date planned around the date you request and the department's capacity

Before you apply

  • The programme is delivered in English and every applicant evidences their level with an official document.
  • Fees and terms are confirmed in writing after the eligibility review; they are not published on this page.
  • Apply three to six months ahead: departments accept only one or two observers at a time and files are reviewed in order.
  • State your focus in the objectives of your application. Allocation follows the department's lists during your dates.

What do candidates ask about Endoscopic Ultrasound (EUS)?

Can I focus on diagnostic or interventional EUS?
Either interest can be named in your objectives, and allocation to the endoscopy lists follows it where the schedule allows. Diagnostic EUS, with EUS-guided sampling where a listed case calls for it, is what an observer can most realistically follow when EUS is on the unit's schedule. Interventional EUS, for example drainage of a pancreatic fluid collection or EUS-guided biliary drainage after an unsuccessful ERCP, is not named in the published scope; it can be followed only where the department performs it during your dates — confirmed after review. A placement follows the department as a whole rather than a single endosonographer.
Can EUS and ERCP exposure be requested together?
Yes. Both belong to the same gastroenterology department's therapeutic endoscopy activity, so one application covers them; name both in your objectives. They are, however, different disciplines: EUS is about imaging and tissue diagnosis, ERCP about therapy under fluoroscopy, and each runs on its own days. Some units combine them in a single session — for example EUS to confirm a duct stone followed directly by ERCP to remove it — but whether that happens during your dates cannot be known in advance. A two- or four-week placement makes it more likely that both feature.
How does EUS relate to EBUS for mediastinal staging?
Both use real-time ultrasound to guide needle sampling of lymph nodes, and in lung cancer staging they can be complementary: EBUS reaches nodes alongside the trachea and bronchi, while EUS from the oesophagus reaches lower mediastinal stations and, for example, the left adrenal gland. At the host hospital, EBUS belongs to the pulmonology department's bronchoscopy sessions, where scheduled. If mediastinal staging is your main interest, the interventional pulmonology and EBUS focus is the closer fit; this page centres on pancreaticobiliary and gastrointestinal EUS, and mediastinal work is followed if it happens to arise on the list.
What background helps me follow an EUS session?
EUS images are not intuitive at the outset, because the probe sits within the stomach or duodenum and the orientation shifts with every movement. Revising pancreatic and peripancreatic vascular anatomy, the layered structure of the gut wall, the TNM principles for pancreatic and upper gastrointestinal cancers and current guidance on pancreatic cysts will make the commentary meaningful from the start. Reading an abdominal CT confidently is equally useful, because EUS findings are interpreted against it. The supervising team explains images in English; you watch from the room and ask questions at the moments they indicate.
Do I need to be a gastroenterologist to apply?
No. The observership is open to clinical-year medical students and graduate physicians whatever their intended specialty, so surgeons, oncologists and radiologists with a pancreaticobiliary interest can apply. For the fellowship, eligibility rests on a recognised specialist qualification and the department's view of fit, and the attachment still sits within gastroenterology. State your background and why EUS matters to your work — for example, a surgeon who wants to understand staging and sampling before resection — so the department can judge whether the placement meets your objectives.

Apply for an observership with Endoscopic Ultrasound (EUS) as your focus

One online application for both routes. State Endoscopic Ultrasound (EUS) as your focus in your objectives; ATDERA reviews the file and prepares it for the Gastroenterology department, then replies with next steps, typically within two working days.

  • Five short steps: your details, education, programme choice, documents and declaration.
  • A personal link by email, so you can leave and return where you stopped — for 60 days.
  • Documents are uploaded in step 4; you need nothing to hand to begin.

Already started? The application page picks up where you left off.

ATDERA Global Limited (Companies House No. 17173428, registered in England and Wales) coordinates this programme for a university teaching hospital in Istanbul. ATDERA is not a hospital and does not provide clinical care; admission decisions and certificates are the host hospital's.

Ready to apply?

One online application covers both routes and all twenty-one specialties — details, programme choice and documents in five short steps. ATDERA reviews the file and replies with next steps, typically within two working days.