There’s something undeniably special about Twincie. When he arrived at our shelter, we saw he wasn't just another cat. He was full of love and playful energy, despite his challenges. His journey features a rare condition called a Peritoneopericardial Diaphragmatic Hernia (PPDH). It is a story of hope, skilled care, and the support of generous donors from our Healing Heroes Fund.
***Surgery photos below***
What Is Peritoneopericardial Diaphragmatic Hernia?
PPDH is a birth defect. In this condition, the diaphragm and pericardium, which protect the heart, don’t form properly. In a normal cat's anatomy, the heart sits in a protective sac. It is surrounded by the lungs in the chest cavity. The diaphragm separates the chest from the abdomen. In Twincie's case, his pericardium didn't form, and his diaphragm was very small. His abdominal organs moved into his chest cavity. This is an alarming and risky situation.
Despite this serious condition, Twincie initially showed no outward distress. Many cats with PPDH show no signs at first. But if not treated, it can cause serious problems. These include breathing issues and heart trouble from organ displacement.

Determining Twincie’s Care Plan
When Twincie arrived, our medical team noticed something odd about his chest structure. X-rays and ultrasound confirmed what we suspected. His diaphragm was nearly gone, and we could see his heart through a gap in his sternum. His abdominal organs – most notably, his liver – were residing in his chest cavity.
Despite the severity of his condition, Twincie was stable. This helped us research surgical techniques, possible complications, and pain management strategies. We aimed for the best outcome for him.


The Surgical Team and Procedure
Performing a complex surgery like this required an experienced and dedicated team. Dr. Sara and Dr. Emily led the surgical team that included Ashley, Jim, Bella. Every member played a key role in keeping Twincie safe before, during, and after the procedure.
Step-by-Step Breakdown of Twincie’s Surgery
- A midline cut was made from Twincie’s sternum down to just below his belly button. The team cut through the thin layer of subcutaneous fat, which was minimal. Then, they found an unusually thin tissue layer where muscle and bone usually are.
- Uncovering the Abnormalities: Twincie’s ribs were tilted to the side. When they opened the cavity, they didn’t find a clear diaphragm. Instead, they saw his heart and liver right away.
- Liver Relocation: The liver was moved from the chest cavity back to its proper place in the abdomen. One lobe of the liver appeared slightly misshapen but otherwise healthy.
- Building a Protective Barrier: Twincie's diaphragm was underdeveloped, and his pericardium was absent. So, they used nearby tissue layers to form a stable barrier between his heart and other organs.
- Final Closure: They made sure Twincie’s internal structures were stable. Then, they closed the incision in layers and did a routine neuter.
Twincie’s Recovery
Recovering from major surgery can be tough. But Twincie showed us how strong and resilient he really is. Within two hours, he was already up and nibbling on food. He needed strict cage rest for proper healing. Also, he received broad-spectrum pain management.
We quickly learned that Twincie had very strong opinions about e-collars! He couldn’t stand the hard plastic cone, but he tolerated the soft surgical suit better. After a week, we transitioned him to a light paper e-collar, which he handled well. By two weeks in, Twincie was free from all limits and started being more active.
Today, he continues to thrive. He will have regular cardiology check-ups to watch his heart. For now, he enjoys playtime, snuggles, and lots of love.
A One-of-a-Kind Cat
Beyond his medical journey, Twincie is simply an incredible cat. His gentle nature and playful spirit make him a favorite among the staff. Despite the challenges he has faced, he remains a loving, social boy who just wants to snuggle and play.
His story shows how strong animals can be. It also highlights the importance of caring veterinary help. Since Twincie arrived at our shelter, he has taught us about perseverance. He faced surgery, recovered, and now enjoys his new health.

Looking Ahead
While Twincie’s surgery was a success, his journey isn’t over. He will be watched for possible heart issues. His long-term outlook depends on how well his body adjusts as he grows. But for now, he is thriving, and that’s worth celebrating.
Twincie’s story exists thanks to our caring veterinary team and the generous donors of the Healing Heroes Fund. If his journey moved you, think about helping other animals. Your contribution can provide lifesaving care to those in need.
Twincie shows us that every life matters. With a team of skilled pros and a caring community, he now has the chance to live his best life.