Yes, a spleen can be surgically removed, and people live full lives without one. The procedure is called a splenectomy, and it’s performed for a wide range of reasons, from emergency trauma repair to treating blood disorders and certain cancers. While you can survive without your spleen, losing it does change how your immune system works, which means long-term precautions are necessary.
What the Spleen Does
Your spleen sits in the upper left side of your abdomen, tucked behind your ribs. It performs several jobs at once: filtering your blood by removing old or damaged blood cells, storing a reserve of blood, producing white blood cells, and making antibodies that help fight infection. The inner tissue of the spleen is divided into two functional zones. One zone handles immune work, churning out infection-fighting white blood cells. The other acts as a filter, clearing out cellular waste and destroying bacteria and viruses circulating in your bloodstream.
None of these functions are exclusive to the spleen. Your liver, bone marrow, and lymph nodes can pick up much of the slack. But the spleen is especially effective at catching certain types of bacteria, which is why its removal increases your vulnerability to specific infections.
Why a Spleen Would Need to Come Out
The reasons fall into a few broad categories. Trauma is one of the most common. The spleen is the most frequently injured organ in blunt abdominal trauma, involved in 35% to 45% of cases. A car accident, a fall, or a sports collision can rupture the spleen, sometimes requiring emergency removal to stop life-threatening internal bleeding. Spontaneous rupture, though rare, can also occur.
Blood disorders account for a large share of planned splenectomies. Conditions like immune thrombocytopenic purpura (where the body destroys its own platelets), hereditary spherocytosis, sickle cell disease, thalassemia, and autoimmune hemolytic anemia can all reach a point where removing the spleen is the most effective treatment. In these cases, the spleen is essentially overactive, trapping and destroying blood cells faster than it should.
Cancers of the blood and lymphatic system, including leukemia, lymphoma, and myelofibrosis, sometimes require splenectomy as part of treatment. Occasionally the spleen needs to come out because of cysts, abscesses, or tumors within the organ itself, or because it must be removed alongside part of the pancreas or stomach during surgery for nearby cancers.
How the Surgery Works
There are two main approaches. Laparoscopic splenectomy uses several small incisions. The surgeon typically places a 12-millimeter port below the rib cage, along with two smaller 5-millimeter ports nearby. The spleen is detached, placed in a bag inside the body, and pulled out through a small incision (usually 5 to 6 centimeters) near the belly button. The average operating time is about 132 minutes.
Open splenectomy involves a single larger incision in the abdomen and takes slightly less time on the operating table, averaging around 121 minutes. Open surgery is more common when the spleen is very enlarged or when the operation is done as an emergency after trauma. For most planned surgeries, the laparoscopic approach is preferred because it generally means less pain, smaller scars, and a shorter hospital stay.
Recovery Timeline
Most recommendations call for about three months of activity restriction after splenectomy. The first three weeks after discharge are typically spent doing only light activity at home. After that, you gradually increase what you do. Some athletes have returned to unrestricted activity as early as three weeks after surgery, but three months is the more widely recommended benchmark before resuming full physical exertion. Recovery from laparoscopic surgery tends to be faster than from open surgery, though the long-term outcome is similar with either approach.
The Biggest Risk: Serious Infection
Living without a spleen is entirely possible, but it does leave you more vulnerable to certain bacterial infections. The most dangerous outcome is a condition called overwhelming post-splenectomy infection, or OPSI. This is a rapidly progressing bloodstream infection that can escalate from mild symptoms to organ failure within hours. It has a mortality rate of up to 50%, though it’s uncommon, occurring in roughly 0.1% to 0.5% of people who’ve had their spleen removed.
The risk is highest in the first few years after surgery, but it never fully disappears. It persists for life. The bacteria most likely to cause problems are encapsulated organisms, the kind the spleen is uniquely good at filtering. This is why prevention through vaccines and antibiotics is taken so seriously.
Vaccines Before and After Surgery
Vaccination is a critical part of spleen removal. You’ll need vaccines against pneumococcal disease, meningococcal disease, and Haemophilus influenzae type b, plus a yearly flu shot. If the surgery is planned, these vaccines are ideally given at least two weeks beforehand so your still-intact spleen can help build a stronger immune response. If surgery was an emergency, the vaccines are given at least two weeks after the operation.
Additional vaccines may be recommended depending on your history. If you don’t already have documented immunity, you may need measles-mumps-rubella and varicella vaccines, given four to eight weeks apart from each other. A booster for tetanus, diphtheria, and pertussis is also standard. Your medical team will lay out a specific schedule based on your vaccination history and individual risk factors.
Daily Antibiotics After Surgery
Because the infection risk is highest in the initial years after splenectomy, daily preventive antibiotics are recommended during that period. Australian guidelines, for example, recommend three years of daily antibiotic use after surgery. Guidelines in other countries vary in the exact duration. If you have other health conditions that further increase your infection risk, lifelong daily antibiotics may be recommended instead.
The goal isn’t to treat an infection you already have. It’s to maintain a low level of antibiotic protection in your bloodstream so that if dangerous bacteria enter, they’re less likely to gain a foothold before your remaining immune defenses can respond.
Travel and Everyday Precautions
People without a spleen are more susceptible to severe malaria, which makes travel to tropical and subtropical regions a more serious consideration. The CDC recommends strict adherence to malaria prevention medication and mosquito bite avoidance for asplenic travelers. You should also carry a course of emergency antibiotics when traveling, in case you develop a fever or signs of illness and need to start treatment while getting to a hospital.
The CDC also advises people without a spleen to consider avoiding destinations where high-quality medical care isn’t immediately accessible. Even with vaccines and preventive antibiotics, a rapidly progressing infection requires fast treatment, and being far from a hospital adds real risk.
In daily life, the adjustments are manageable but ongoing. Staying current on vaccinations, taking prescribed antibiotics, seeking medical attention quickly for fevers or signs of infection, and carrying medical identification noting your asplenic status are the main habits. Animal bites and tick bites also warrant prompt medical attention, since your body is less equipped to fight the bacteria they can introduce. With these precautions in place, most people without a spleen live normal, active lives.