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SurgSpace / Specialties / Colorectal Surgery

Colorectal Surgery

Colon, rectum and anus: cancer resections planned on embryological planes, inflammatory bowel disease, diverticular disease and its perforations, and the stomas that make radical surgery survivable. The specialty where anatomy, oncology and function meet most visibly.

4 operations in depth5 interactive cases

Backdrop: A pedunculated colonic polyp seen at colonoscopy, the lumen and haustral folds beyond it · Dr Gannavarapu Narasimha Murthy · CC0

Read the scan

Imaging

See the study, interpret it, then answer the surgical question.

The studies that shape surgical decision-making. Not a radiology curriculum: what the scan changes about the plan, then practice reading it.

Practice the image

The margin that writes the plan

A 61-year-old with rectal bleeding; colonoscopy found a rectal tumour. Staging MRI of the pelvis. (Fictional educational case.)

Synthetic educational image · schematic rectal MRI for margin practice

Find the tumour and the mesorectal fascia, and understand why the distance between them, the circumferential resection margin, writes the whole treatment sequence.

What each study decides

Investigations

  • Colonoscopy

    • The tissue and the map: diagnosis, biopsy, polypectomy, and a tattoo so the surgeon can find at operation what the scope found in clinic.
    • Its edges matter too: an incomplete colonoscopy or an obstructing tumour means the rest of the colon gets imaged another way before it is trusted.

  • Staging CT

    • Chest, abdomen and pelvis for the distant question: liver and lung metastases, and the local invasion that changes the operation.
    • In the emergency, the same scanner grades the obstruction and finds the perforation: caecal diameter and free gas are surgical numbers.
    Want to interpret the full study? Open in RadSpace

  • MRI of the rectum

    • Rectal cancer's local truth: depth of invasion, nodal disease, and above all the distance to the mesorectal fascia, the envelope's edge that must not be breached.
    • A threatened margin sends the patient to radiotherapy before surgery: the MRI report, not the surgeon's preference, makes that call.
    Want to interpret the full study? Open in RadSpace

  • CEA & the blood panel

    • CEA is a baseline and a surveillance tool, not a diagnostic test: its rise after treatment is often the first whisper of recurrence.
    • Around the emergency, the ordinary numbers carry the weight: haemoglobin for the silent right-sided bleed, albumin for the colitis, lactate for the closed loop.

Hub shaped by the Surgical Specialties Lead with the Colorectal surgery reviewer (open seat). Images and videos carry their source; educational use for supervised learning, not clinical guidance.