Stories of a tree found growing in a man’s lung have circulated widely, and a pea really has sprouted inside a person’s airway.1Docquity. Russian Man Makes Medical History: Tree Found Growing in His Lung But a lung can’t raise a tree. A sprout there has no light and no soil, so it stays tiny. The stranger risk is the food itself, inhaled the wrong way, which can quietly mimic serious lung disease.
What Really Happened in the Pea and Fir Tree Cases
A 75-year-old man in Massachusetts went to hospital with a collapsed lung.2BBC News. Pea plant grows inside man’s lung3the Guardian. Pea sprouts after taking root in man Doctors passed a scope down his throat, scraped at a crusted lump and found a pea sprouting.4the Guardian. Pea sprouts after taking root in man He had likely eaten a pea that went down the wrong way into his airway.5BBC News. Pea plant grows inside man’s lung
A bronchoscope is a thin, flexible tube with a camera, so the doctors saw the pea directly instead of guessing from a scan. The crust was a clue too: a freshly inhaled morsel wouldn’t have one, so something had been sitting there for a while.
The pea sprouted but stayed tiny because a pea carries its own stored food, enough to push out a short shoot. Once that store runs out, a seedling needs light to make more, and the lung is dark.
The fir tree story doesn’t add up. A Russian story claimed surgeons in the Urals removed a small spruce from a man’s lung.6the Guardian. Shortcuts: Medics in the Urals remove tiny fir tree from man7Docquity. Russian Man Makes Medical History: Tree Found Growing in His Lung But the photo showed a firm, bright green spruce with no roots, like a fresh clipping.8the Guardian. Shortcuts: Medics in the Urals remove tiny fir tree from man A shoot grown in darkness would be pale, not green like a sunlit plant, so the picture looks more like a cut twig than something grown inside a body.
The size is a problem as well. An object of branch size would have needed years of growth in a space that can’t hold it, and would have caused severe breathing trouble long before. And a story repeated by many websites may still trace back to a single unverified original.
The difference from the pea case is in the detail. A medical journal report names the patient’s age, symptoms, tests and treatment, so other doctors can check whether it hangs together. A viral post usually offers a vague place and an unnamed surgeon, with nothing to trace. When you see a story like this, ask whether doctors or a journal described it, whether green leaves contradict the darkness, and whether the size fits a seed’s own food supply.
Why a Lung Can’t Grow a Tree
Seeds are picky. Seeds of some plants need warmth, the right oxygen level and long light exposure to sprout well.9Canadian Journal of Botany. Light, oxygen, and temperature requirements for <i>Typha latifolia</i> seed germination Warmth and moisture help, but each seed has its own demands. Body warmth and moisture can trigger sprouting in seeds that don’t need light.10Canadian Journal of Botany. Light, oxygen, and temperature requirements for <i>Typha latifolia</i> seed germination
Seeds that need light would simply stay dormant in the dark of a lung. Seeds that don’t, like a pea, are the ones that might start to sprout, which is why the documented case involved one.
Even a seed that starts would lack almost everything a tree needs. Roots need soil and minerals to anchor and feed. Leaves need sunlight to make sugar. A tree needs space, but airways are narrow tubes, and a growing object would block breathing long before reaching any size.
It also helps to know where swallowed seeds go. Seeds you swallow head to the stomach, not the lung, and stomach acid and digestion stop them from sprouting. Only food that slips into the airway gets near the lung, and even then growth is rare and short-lived.
The lung also fights back. The airways are lined with mucus and tiny hairs called cilia that beat in waves.11PubMed Central. Cilia and Mucociliary Clearance They sweep trapped particles up and out of the lungs.12PubMed Central. Cilia and Mucociliary Clearance The mucus layer moves upward toward the throat, where particles can be coughed out or swallowed. A cough gives a stronger push and is the body’s first response to something larger. But a seed lodged deep in a narrow branch can be out of reach of both cilia and cough.
Then comes inflammation. Inhaled food in the lung typically sets off inflammation around it.13PubMed. Pulmonary disease due to aspiration of food and other particulate matter: a clinicopathologic study of 59 cases diagnosed on biopsy or resection specimens Immune cells gather, and the tissue swells and thickens around the object. That swelling and a crust of mucus and cells can wall the object off, which is part of why it can sit for weeks before anyone finds it. A walled-off seed is surrounded by fluid and debris, not by anything a root could use.
What Happens When Food Goes Down the Wrong Way
Doctors call inhaling food or an object into the airway aspiration. In adults it is uncommon but can be life-threatening.14PubMed Central. Foreign body aspiration in adult airways: therapeutic approach It usually starts with a choking moment, then cough and shortness of breath.15PubMed Central. Foreign body aspiration in adult airways: therapeutic approach But these signs don’t always appear, and they can look like asthma or COPD.16PubMed Central. Foreign body aspiration in adult airways: therapeutic approach
In the moment, it feels like a sudden spell of choking, coughing or gagging while eating, sometimes with a watery-eyed, panicky feeling. Many people recover quickly and feel fine afterward, so they never connect later symptoms to the episode.
Older adults are more prone to this. Swallowing reflexes weaken with age, missing teeth mean larger chunks go down, and some medicines and strokes dull the cough reflex. The man in the pea case was 75.
Food is the usual culprit. In biopsies of lungs damaged by inhaled material, food or plant matter was found in 54 of 59 cases.17PubMed. Pulmonary disease due to aspiration of food and other particulate matter: a clinicopathologic study of 59 cases diagnosed on biopsy or resection specimens Almost 9 in 10 of those lungs showed a type of slow-healing pneumonia.18PubMed. Pulmonary disease due to aspiration of food and other particulate matter: a clinicopathologic study of 59 cases diagnosed on biopsy or resection specimens A cherry pit stuck for a long time caused growth that looked like a tumor, with bacteria around it.19PubMed Central. Adenomatous hyperplasia induced by chronic cherry pit retention mimicking an endobronchial tumor-case series and systematic review of literature
Plant matter is worse than many objects. Seeds and vegetables soak up moisture and swell, which wedges them tighter in the airway, and organic material feeds bacteria and inflammation.
Damage builds the longer food stays. The object partly blocks an airway, so mucus and bacteria collect behind it instead of being cleared. That leads to repeated infections in the same part of the lung. Over time the tissue around the object can scar or thicken, which is how a long-lodged item ends up looking like a mass.
People are often treated for asthma, COPD or pneumonia first, and the real cause turns up only when treatment fails. A history of a choking episode is what most often points doctors to the right answer.
Warning Signs and How Doctors Find and Remove It
A cough that lingers for weeks after choking on food needs checking. Repeated pneumonia in the same spot is a clue, and so is wheezing on one side, which can signal a blockage. Tell the doctor about any choking episode, even an old one.
Chest X-rays and CT scans can show where an object is and help diagnosis.20PubMed Central. Foreign body aspiration in adult airways: therapeutic approach But an inhaled pea in one adult didn’t show clearly and looked like a mass.21PubMed Central. Late-diagnosed pea aspiration in an adult mimicking a mass-like right lower-lobe lesion and requiring basal segmentectomy: A case report Doctors had to consider pneumonia, abscess and even lung cancer.22PubMed Central. Late-diagnosed pea aspiration in an adult mimicking a mass-like right lower-lobe lesion and requiring basal segmentectomy: A case report
Food and plant material often have a soft density similar to the surrounding tissue, so they blend into the image. When the object isn’t clearly seen, the swelling and infection around it are what show up. Inhaled chili pepper pieces can show as V- or U-shaped shadows, but these aren’t proof.23PubMed Central. Chili pepper aspiration in elderly patients: a case series highlighting diagnostic challenges and the role of cryoextraction The shape reflects how the object sits in branching airways, and other conditions can produce similar shadows. Doctors weigh it with the patient’s story and then look with a camera.
Bronchoscopy, a camera tube passed down the throat into the airways, is the standard way to find and remove an inhaled object.24PubMed Central. Foreign body aspiration in adult airways: therapeutic approach It’s done under sedation or anesthesia, with the tube going through the mouth or nose. Small tools pass through it to grab the object, and most people go home the same or next day.
When grasping tools fail, a freezing probe can stick to the object in 10 seconds and pull it out whole.25PubMed Central. Use of cryoprobe for removal of a large tracheobronchial foreign body during flexible bronchoscopy Sometimes more than one seed is inhaled, and one child coughed up a second seed 10 days later.26Rossiyskiy Vestnik Perinatologii i Pediatrii (Russian Bulletin of Perinatology and Pediatrics). Mistakes and complications in the diagnosis and treatment of children with organic foreign body aspiration In one late-found pea case, part of the lung had to be removed.27PubMed Central. Late-diagnosed pea aspiration in an adult mimicking a mass-like right lower-lobe lesion and requiring basal segmentectomy: A case report
Prevention is simple. Eat slowly and chew well, especially small round foods. Avoid talking or laughing with food in your mouth. And watch young children with peas, nuts and seeds.
Where Else Seeds Have Sprouted in the Body
The ear canal is a better incubator. Seeds and beans often end up stuck there, though it’s very unusual for them to grow.28The Naked Scientists. Say that again? The seed that grew inside an ear29Case Reports in Internal Medicine. A germinating seed found in human ear: A case report Still, doctors in Beijing removed several sprouted seeds from a 1-year-old’s ear.30Global Times. Can a Tree Grow in Your Lungs? The Science Explained The ear canal is warm, moist and open to air.31Global Times. Can a Tree Grow in Your Lungs? The Science Explained It also has no mucus conveyor sweeping it clean, and small children push seeds in and don’t tell anyone.
The ending differed from the lung case. Doctors could look directly into the canal, so the seeds came out without major surgery. In the lung, the same kind of sprout is hidden and tied up with infection.
If you suspect a seed in a child’s ear, don’t dig with tweezers or swabs. Avoid flushing with water, which can swell a seed. See a doctor for removal.
Swallowed seeds clump instead. Undigested seeds can pack into a hard clump in the gut.32PubMed Central. Gastrointestinal Seed Bezoars: A Systematic Review of Case Reports and Case Series Most of these clumps are found in the rectum, often in healthy people.33PubMed Central. Gastrointestinal Seed Bezoars: A Systematic Review of Case Reports and Case Series In the gut, seeds meet stomach acid, digestive enzymes and no light, which doesn’t allow sprouting. The clumps are a constipation problem, not a plant problem.
Pets face a similar problem. Grass seed heads cause most foreign-body problems in dogs and cats, half in the ear.34Journal of the American Veterinary Medical Association. Grass awn migration in dogs and cats: A retrospective study of 182 cases They can work into a dog’s chest and puncture a lung.35PubMed. CT is helpful for the detection and presurgical planning of lung perforation in dogs with spontaneous pneumothorax induced by grass awn migration: 22 cases Check paws and ears after walks in tall grass. Sudden head shaking or sneezing can mean a seed, and a quick vet visit keeps it from moving deeper.