A perforated colon during a colonoscopy is not automatically malpractice. Perforation is a recognized complication of the procedure, occurring in roughly 1 in 500 to 1 in 6,000 diagnostic colonoscopies and more often in therapeutic ones.1PubMed Central. Colonoscopic Perforation: Incidence, Risk Factors, Management and Outcome Whether yours gives you a malpractice case depends on whether the gastroenterologist’s conduct fell below the professional standard expected of a competent peer in the same situation, and whether that failure caused the injury.
When Perforation Is a Complication and When It Is Negligence
The legal line turns on the “standard of care,” which measures the doctor’s actions against what a reasonably competent gastroenterologist would have done under the same circumstances.2Legal Information Institute. Standard of Care A perforation that occurs despite careful, guideline-compliant technique is a complication, not malpractice. A perforation that results from substandard technique is negligence.
Rates climb significantly for therapeutic procedures. Some studies report perforation rates as high as 1 in 20 for complex interventions like endoscopic submucosal dissection.1PubMed Central. Colonoscopic Perforation: Incidence, Risk Factors, Management and Outcome Patient-specific factors also raise the risk: prior abdominal surgery and the scar tissue it creates, diverticular disease, older age, and anatomical features like sharp colonic turns. A doctor who ignores these factors or fails to adjust technique has weaker legal footing than one who took appropriate precautions and encountered an unavoidable complication.
The negligent scenarios malpractice attorneys see most often include:
- Excessive force during scope advancement. Pushing the colonoscope through resistance instead of pulling back and repositioning. A competent endoscopist recognizes when the colon wall is tenting or looping and adjusts.
- Ignoring known risk factors. Failing to account for prior surgeries, adhesions, or diverticular disease when planning and executing the procedure.
- Careless polypectomy. Using electrocautery settings that are too aggressive or removing tissue at the wrong depth, burning through the colon wall when a careful operator would not have.
- Delayed recognition. Missing the perforation during the procedure itself, or sending a patient home with worsening abdominal pain, fever, or distention without evaluating for perforation.
Delayed Diagnosis Can Be Its Own Malpractice
Even when the initial perforation was a non-negligent complication, a delay in diagnosing it can be a separate and independent act of malpractice. Doctors should suspect a perforation when a patient develops fever, severe abdominal pain, or abdominal distention after a colonoscopy, even if those symptoms appear days later.1PubMed Central. Colonoscopic Perforation: Incidence, Risk Factors, Management and Outcome
The timing matters medically as well as legally. Patients whose perforation is caught within 24 hours tend to have minimal contamination of the abdominal cavity and can often be repaired with primary surgery. Those diagnosed after 24 hours are far more likely to have widespread contamination and may need a colostomy.1PubMed Central. Colonoscopic Perforation: Incidence, Risk Factors, Management and Outcome A doctor who dismisses red flags and delays treatment can face liability for the additional harm the delay caused, even if the original injury would not have been actionable on its own.
The Four Elements You Have to Prove
Every medical malpractice lawsuit requires proving four specific legal elements.3PubMed Central. An Introduction to Medical Malpractice in the United States
- Duty. The doctor owed you a professional obligation. The doctor-patient relationship establishes this, and it is rarely disputed.
- Breach. The doctor’s conduct fell below the standard of care. This is usually where the case is won or lost, and it almost always requires expert testimony from another gastroenterologist.
- Causation. The breach directly caused your injury. You must show the perforation would not have occurred but for the doctor’s substandard conduct. If the perforation would have happened even with perfect technique, causation fails.
- Damages. You suffered actual, measurable harm as a result.
Causation is where many colonoscopy perforation cases fall apart. Because perforation is a known risk even with flawless technique, proving that your particular perforation resulted from negligence rather than bad luck takes strong medical evidence. An expert who can point to specific departures from protocol, combined with records showing the injury pattern is inconsistent with a non-negligent complication, is often the difference between a viable case and one that gets dismissed.
Informed Consent as a Separate Claim
Even if the colonoscopy itself was performed competently, a failure to properly explain the risks beforehand can support a separate claim. Informed consent requires the physician to disclose the meaningful risks of the procedure, the expected benefits, and available alternatives so you can make a genuine decision about whether to go forward.4Legal Information Institute. Informed Consent Doctrine
Colon perforation is a risk that should be disclosed before any colonoscopy. If the doctor never mentioned it, you can argue that you would have declined the procedure or chosen an alternative like a CT colonography had you known. A signed consent form is evidence the conversation happened, but a signature alone does not defeat the claim if the form was presented as a formality without meaningful explanation.5StatPearls Publishing. Informed Consent
What You Can Recover
If you prove all four elements, damages can be substantial. Treatment for a perforated colon frequently requires emergency surgery, and hospital stays commonly run around two weeks. Surgical options range from simple repair of the tear to partial removal of the colon to creation of a colostomy, depending on how large the perforation is and how much contamination has spread.6PubMed Central. Management Outcomes of Colonoscopic Perforations Are Affected by Time
Economic damages cover your out-of-pocket losses: emergency surgery costs, extended hospitalization, follow-up procedures, medication, lost wages during recovery, and future medical care tied to the injury. A permanent colostomy adds up significantly over a lifetime once supply and management costs are included.
Non-economic damages compensate for losses that don’t come with a receipt: physical pain during a prolonged recovery, emotional distress, loss of enjoyment of daily activities, and the psychological toll of living with a colostomy or other permanent consequence. Roughly half of states cap non-economic damages in medical malpractice cases, with limits ranging from $250,000 to over $1 million depending on the jurisdiction and the severity of the injury. These caps do not apply to economic damages in most states.
Although rare, colonoscopy perforations can be fatal, particularly when diagnosis is delayed and infection spreads. If a patient dies, close family members can typically pursue a wrongful death claim. Eligible claimants generally include the surviving spouse, children, and parents, though exact rules vary by state. Recoverable damages can include the deceased’s medical expenses before death, funeral costs, lost future income the family would have received, and loss of companionship.
Deadlines That Can End the Case Before It Starts
Medical malpractice claims have strict deadlines. Miss them and your case is gone, regardless of how strong the evidence is.
Every state sets a filing deadline called a statute of limitations, typically ranging from one to four years. The clock usually starts on the date of the injury, but many states apply a “discovery rule” that pauses it until the date you knew or reasonably should have known you were injured and that the injury was potentially caused by the doctor’s negligence. The “reasonably should have known” language imposes a duty to investigate: if your post-procedure symptoms were severe enough that a reasonable person would have sought answers, a court may find the clock started when the symptoms appeared, not when you finally got a diagnosis.
Many states also impose a statute of repose, an absolute outer deadline that cannot be extended by the discovery rule. These outer deadlines vary but commonly fall between four and ten years from the date of the procedure. Once that date passes, the claim is gone even if you had no way to know about the malpractice earlier.
A significant number of states require you to file a certificate of merit or affidavit of merit alongside your complaint or within a short window after filing. This document must be signed by a qualified medical expert who has reviewed your records and believes the evidence supports a departure from the standard of care that caused your injury.7National Conference of State Legislatures. Medical Liability/Malpractice Merit Affidavits and Expert Witnesses Failing to file it can result in immediate dismissal. Some states add another layer by routing your claim through a pre-suit medical review panel before you can file in court.
Evidence and Finding an Attorney
Medical records are the backbone of a colonoscopy malpractice case. The colonoscopy report documents what the doctor saw, what instruments were used, whether any polyps were removed, and how long the procedure took. Anesthesia records, nursing notes, and records from any subsequent emergency surgery or hospitalization fill in the timeline. Request complete copies as early as possible.
Expert testimony is nearly always required. A member of the medical profession needs to explain to the judge and jury what the defending physician should or should not have done, and whether that conduct violated the profession’s standards.8PubMed Central. The Expert Witness in Medical Malpractice Litigation Without a qualified gastroenterologist willing to testify that the standard of care was breached, most courts will not let the case reach a jury. Many states also require the expert to practice in the same specialty as the defendant, or at minimum to be board-certified in a closely related field.
Medical malpractice cases are expensive to pursue. Expert witness fees, medical record retrieval, court filing costs, and deposition expenses can easily run into tens of thousands of dollars before trial. Most malpractice attorneys work on contingency, meaning they advance those costs and take a percentage of any recovery, typically 30% to 40%, though some states cap these fees by statute. Because the attorney absorbs the financial risk, firms are selective about which cases they take. If several decline yours after reviewing the records, the honest reading is usually that the evidence does not support one of the four elements, most often causation.