Abdominal Inspection:
what you see before you ever touch the patient
The first and most often rushed step of the abdominal exam. Before you decide to palpate, the abdomen has already told you part of the story — if you knew how to look.
In the previous article we divided the abdomen into quadrants and regions and showed how a precisely localized finding belongs in your documentation. Now we go back to the very start of the exam — inspection. Most crews clear it with a single two-second glance. Yet inspection is the one step that cannot be repeated with the same quality once the patient reaches the hospital — the pain, the position, and the patient’s state at the moment you arrive will not look exactly the same an hour later at triage.
Why the sequence matters
The abdominal exam has a strictly defined order of steps — inspection, auscultation, percussion, palpation — and this is not arbitrary. Inspection must come first and untouched, because any contact can change what the patient does with their body: they guard, their breathing changes, the abdominal wall tenses in anticipation of pain. Information gathered through pure observation before the first touch cannot be simulated or repeated later.
A systematic look — what to check, and in what order
The recommended inspection sequence moves from the general to the specific. This isn’t about “looking at the abdomen” — it’s a targeted assessment of five areas in a fixed order, ideally once before the patient is fully exposed, and again once fully exposed.
| Order | What you assess | What you’re asking |
|---|---|---|
| 1 | Shape and symmetry | Is the abdomen flat, scaphoid, distended? Symmetric, or is only one area bulging? |
| 2 | Skin surface | Scars, striae, bruising, rashes, venous pattern, skin color |
| 3 | Wall movement | Does the abdomen move with the chest during breathing? Is peristalsis or pulsation visible through the wall? |
| 4 | Body position | How is the patient lying spontaneously? Do they shift position, or stay still? |
| 5 | Facial expression and behavior | Grimacing with movement, shallow breathing, guarded posture |
Distension — symmetric vs. asymmetric
Distension is one of the most common inspection findings, but its clinical value depends entirely on whether it is symmetric or asymmetric. This distinction is often lost in the field — the record simply says “abdomen distended,” which is only half the information.
Bulging is uniform across the entire abdomen, with no localized bulge. Typically associated with generalized accumulation of gas or fluid throughout the abdominal cavity.
The bulge is localized to a single area — signaling a specific local process rather than a generalized state. Requires precise localization by quadrant/region.
Visible peristalsis and pulsations
Under normal circumstances, bowel movement is not visible through the abdominal wall — the wall is thick enough to mask it. If you see waves of peristalsis through the wall, this is almost always a pathological finding.
Visible waves progressing across the abdominal wall (most often in the upper half of the abdomen) are a classic finding in mechanical small bowel obstruction — the bowel attempts to overcome the blockage with stronger contractions, which become visible externally through a thinned or lax abdominal wall. This is more common in thinner patients and in advanced obstruction.
In infants, visible peristalsis moving right-to-left across the epigastrium is a classic (though late) sign of pyloric stenosis.
Similarly, pay attention to visible pulsation in the midline, especially above the umbilicus in an older patient. Although palpating a pulsatile mass belongs to the palpation step, you will often catch the pulsation itself visually first — and this is one of the few instances where inspection alone can point you toward a suspected abdominal aortic aneurysm before you’ve even touched the patient.
Cullen’s and Grey Turner’s signs
Two specific skin signs are uncommon findings, but when they appear, they carry significant clinical weight — and in the field they are frequently missed simply because they’re not front of mind during a routine exposure of the patient.
| Sign | Where to look | What it means |
|---|---|---|
| Cullen’s sign | Periumbilical area — bluish to yellow-green discoloration around the navel | Retroperitoneal or intraperitoneal hemorrhage (severe acute pancreatitis, ruptured ectopic pregnancy, occasionally trauma) |
| Grey Turner’s sign | Flanks — blue-purple discoloration on one or both sides | Retroperitoneal hemorrhage, most commonly associated with severe hemorrhagic pancreatitis or retroperitoneal trauma |
Both signs develop 24–72 hours after the onset of bleeding — they are not markers of an acute event just starting, but a sign that bleeding has already been occurring for some time, often unrecognized. The patient may already have had one unsuccessful contact with the healthcare system. If you find these signs, this is a significant finding requiring priority transport regardless of how “stable” the patient appears at that moment.
They require full exposure of the abdomen including the flanks and periumbilical area — with a routine, partial exposure, you simply won’t see them.
Other skin and surface findings
| Finding | Clinical significance |
|---|---|
| Surgical scars | History of prior surgery — key for suspecting adhesive bowel obstruction as a cause of ileus |
| Striae (old/new) | Old, silvery striae = prior pregnancy, weight fluctuation. New, pink-purple and wide = possible Cushing’s syndrome or rapid volume increase (ascites) |
| Dilated superficial veins (caput medusae) | Portal hypertension — veins radiating outward from the umbilicus |
| Bruising without a clear traumatic history | Consider coagulopathy, anticoagulant therapy, unrecognized trauma (especially in patients with altered mental status) |
| Bulge at the groin/umbilicus/scar with Valsalva | Hernia — inguinal, umbilical, or incisional; important when incarceration is suspected |
Respiratory movement of the abdominal wall
Under normal circumstances, the abdominal wall rises slightly with inspiration in tandem with diaphragmatic movement. Absence of this movement, or its cessation with breathing, is an important but easily overlooked finding.
A patient with peritoneal irritation instinctively limits movement of the abdominal wall because every movement hurts — they breathe shallowly, predominantly with the chest, while the abdominal wall stays nearly motionless. You can pick up on this finding from a distance, before you touch the patient at all, and it’s one of the objective signs of pain in a patient who cannot or will not verbalize it.
Body position as a diagnostic signal
The way a patient spontaneously lies — without you asking them to do anything — is one of the most reliable objective signs in abdominal pain, because the patient cannot consciously “perform” or suppress it as easily as a verbal pain report.
| Position | Typical association |
|---|---|
| Lying on the side with legs flexed (fetal position), motionless | Peritonism — any movement worsens pain, patient resists any change in position |
| Restless, frequent position changes, “can’t stay still” | Colicky pain (renal, biliary) — pain waxes and wanes and the patient instinctively searches for a relieving position |
| Leaning forward while sitting (pancreatic lean) | Pancreatitis — forward flexion reduces tension on the retroperitoneum |
| Supine with legs flexed, not moving | Diffuse peritonism — any stretching of the abdominal wall worsens pain |
A common misread: a restless, fidgeting patient is perceived as a “less serious” case than a motionless, quiet one. It’s exactly the opposite. Colic hurts intensely, but movement doesn’t make it worse — which is why the patient moves. Peritonism hurts with every movement — which is why the patient stays absolutely still. Stillness is not a sign of lower severity; it’s often the opposite.
How to document the inspection finding
“Abdomen looks fine.”
“Abdomen symmetric, no visible distension, no scars, no visible peristalsis or pulsation. Respiratory movement of the abdominal wall symmetric and present. Patient spontaneously supine, no guarded posture.”
“Abdomen bloated and it hurts.”
“Abdomen diffusely, symmetrically distended. Respiratory movement of the abdominal wall minimal, predominantly thoracic breathing. Patient in a forced side-lying position with legs flexed, refuses any change in position. No visible scars, no Cullen’s/Grey Turner’s sign.”
Field case
On exposing the patient on the stretcher (not partial, but full exposure), the paramedic notices blue-purple discoloration on both flanks — not fresh, but distinct. The patient reports the pain has lasted three days, worsened today, with new nausea.
Patient care record entry: “On full exposure, bilateral blue-purple discoloration present on the flanks (suspected Grey Turner’s sign), pain duration 3 days. Abdomen mildly distended, symmetric. BP 105/65, HR 102/min. Suspected retroperitoneal hemorrhage / severe pancreatitis — differential also to consider ruptured AAA. Priority transport, secure 2x IV access.”
Without full exposure and systematic inspection of the flanks, this sign would have gone undetected and the case could have been cleared as routine musculoskeletal pain.
Summary — a five-point check before you touch the abdomen
1. Fully expose the abdomen including the flanks and periumbilical area — not just the part visible with routine clothing
2. Assess shape and symmetry — both overall and locally
3. Check the skin — scars, discoloration, bruising, venous pattern
4. Observe respiratory movement of the wall and any visible peristalsis or pulsation
5. Document the spontaneous body position — before you ask the patient to move
The next part of the series covers auscultation — and why a binary “bowel sounds present/absent” note isn’t enough, even though it’s the most common way this step gets documented in the field.
- Abdominal Inspection: what you see before you ever touch the patient (this article)
- Auscultation of the Abdomen: more than “sounds present/absent”
- Percussion of the Abdomen: why most crews skip it, and when it’s worth it
- Palpation Step by Step: light and deep technique
- Specific examination maneuvers and signs
- Abdominal exam in trauma vs. medical pain
- Abdominal exam in the complicated patient
- Vital signs as part of the abdominal exam
- Bickley LS, Szilagyi PG. Bates’ Guide to Physical Examination and History Taking. 13th ed. Wolters Kluwer, 2021.
- Macleod J, Douglas G. Macleod’s Clinical Examination. 14th ed. Elsevier, 2018.
- Cline DM, et al. Tintinalli’s Emergency Medicine: A Comprehensive Study Guide. 9th ed. McGraw-Hill, 2020.
- Dickson RA, et al. Cullen’s and Grey Turner’s Signs in Acute Pancreatitis. World J Emerg Med. 2019;10(4):220–225.
- Mookadam F, Cikes M. Cullen’s and Turner’s Signs. N Engl J Med. 2005;353(13):1386.
- StatPearls. Abdominal Examination. NCBI Bookshelf. Updated 2024.
- Kühn F, et al. Abdominal Aortic Aneurysm. Dtsch Arztebl Int. 2020;117(48):813–820.
- American College of Surgeons. ATLS — Advanced Trauma Life Support, 10th Edition. 2018.