A G-tube (gastrostomy tube) is placed through the skin of the upper left abdomen directly into the stomach. The entry point sits about 2 centimeters below the bottom of the breastbone and 2 centimeters inward from the lower edge of the rib cage. From the outside, it looks like a short tube or a flat button sitting flush against the skin in that area.
Exact Location on the Stomach
The tube enters the front wall of the stomach body, which is the large central section between the upper curve and the lower curve of the organ. This spot is chosen carefully to avoid major blood vessels that run along the stomach’s edges. During placement, the stomach is inflated with air so the doctor can identify the best insertion point, ensuring the tube lands in a safe zone away from the arteries that supply blood to the stomach lining.
The tube passes through several layers of tissue to get there: skin, a thin layer of fat, the connective tissue and muscle of the abdominal wall, and finally the stomach wall itself. Once in place, the tube creates a direct channel (called a tract) between the skin surface and the inside of the stomach. This tract takes about 2 to 4 weeks to fully heal and form a stable tunnel of scar tissue. If the tube accidentally falls out before that 4-week mark, the immature tract can allow stomach contents to leak into the abdominal cavity, which is a serious complication requiring emergency care.
How the Tube Gets There
There are three main ways a G-tube can be placed, and the location on the abdomen is essentially the same regardless of the method. What differs is how the doctor navigates to that spot.
Endoscopic (PEG) Placement
This is the most common method. A thin, flexible camera is passed through the mouth and down into the stomach. The doctor inflates the stomach with air and shines the camera’s light outward. That light is visible through the skin from the outside, confirming exactly where the stomach wall sits closest to the abdominal wall. The doctor then numbs the skin at that spot, makes a small puncture, and threads the tube through. The entire procedure uses sedation rather than general anesthesia, and most people are awake but relaxed throughout. PEG stands for percutaneous endoscopic gastrostomy, and it’s what most people mean when they say “G-tube placement.”
Radiologic (Image-Guided) Placement
When a camera can’t be passed through the mouth (due to a tumor, narrowing, or prior surgery in the throat or esophagus), an interventional radiologist can place the tube using real-time X-ray imaging called fluoroscopy. The stomach is inflated through a thin tube passed through the nose, and the radiologist watches on a screen as they puncture through the abdominal wall into the stomach. Contrast dye is injected at the end to confirm the tube is sitting correctly inside the stomach with no leaks. Some centers also use ultrasound or review CT scans beforehand to map out the anatomy and plan the safest entry point.
Surgical Placement
Open or laparoscopic surgery is reserved for situations where neither the endoscopic nor the radiologic approach is feasible. In a laparoscopic procedure, the surgeon inserts a small camera through a port at the belly button and one or two additional small ports in the left upper abdomen. The stomach is stitched to the inner abdominal wall at the chosen site, and the tube is placed through one of the port incisions. Compared to open surgery, laparoscopic placement means smaller incisions, less pain, and lower risk of hernias at the incision site. Open surgery may still be necessary if scar tissue from previous abdominal operations makes it difficult to work through small ports.
What It Looks Like After Placement
There are two basic designs, and both sit at the same spot on the upper left abdomen. A standard G-tube has a length of tubing that extends several inches outside the body, with a clamp and a connector at the end for attaching a feeding syringe or bag. An internal bumper or balloon inside the stomach keeps it from sliding out, and an external bumper or disc sits against the skin to keep it from sliding in.
A low-profile tube, often called a “button,” sits nearly flush with the skin. It has a small valve on the surface that you open and attach an extension set to when it’s time to feed. Between feedings, there’s almost nothing visible. Button-style tubes are popular for children, active adults, and anyone who finds the longer tube uncomfortable or cosmetically bothersome. They’re also less likely to get caught on clothing or accidentally pulled out.
Complications to Be Aware Of
G-tube placement is generally safe, but complications are not rare. One large hospital review found that about 32% of patients experienced at least one issue within the first year. The most common problem is infection around the tube site, occurring in roughly 9% of cases. Infection at the skin opening typically shows up as redness, warmth, swelling, or drainage in the days after placement and is usually treatable with wound care or antibiotics.
Other potential issues include minor bleeding at the insertion site, the tube becoming clogged or leaking, and the tube slipping out of position. Most of these are manageable without another procedure. The more serious but less common risks include perforation (the tube puncturing a nearby organ) and aspiration pneumonia, where stomach contents enter the lungs. Your care team will typically check the tube’s position with imaging if there’s any concern about placement.
The Healing Period
For the first 2 to 4 weeks after placement, the tract between the skin and stomach is still forming. During this window, the site needs careful cleaning and monitoring. You’ll typically be told to keep the area dry, avoid twisting or pulling the tube, and watch for signs of infection. Feedings usually start within 24 hours of placement, beginning with small volumes and increasing gradually.
Once the tract matures at around 4 to 6 weeks, the tube can be replaced at the bedside if it wears out or needs to be swapped for a different size. At that point, the channel holds its shape long enough for a new tube to be slid in without surgery. Before that 4-week mark, any dislodgment is treated as urgent because the immature tract can collapse quickly, sometimes within hours, closing off the path to the stomach and risking leakage into the abdominal cavity.