When a safe procedure hides a quiet problem
A man in his sixties goes in for a prostate biopsy. He comes home the same day, as expected.
Then, over the next hours, he notices bruising spreading across his lower belly and between his legs. It looks alarming — but because it sits in a place that is hard to see, he almost dismisses it.
That single choice matters. A new case report walks through exactly what happened next, and why speaking up quickly made all the difference.
Why prostate biopsies keep coming up
Prostate cancer is the most common cancer of the male reproductive tract. When screening raises concern — usually from a PSA blood test or imaging — biopsy is still the only way to confirm the diagnosis.
There are two main routes. The older transrectal approach goes through the rectum. The newer transperineal approach, which is increasingly preferred, goes through the skin of the perineum — the area behind the scrotum and in front of the anus.
Transperineal biopsy has lower rates of serious infection. It is also generally considered safer overall.
The catch that clinicians sometimes miss
Because transperineal needles travel through soft tissue with lots of small blood vessels, they can occasionally nick one.
Usually that causes nothing more than a small, harmless bruise. But in rare cases, bleeding can spread under the skin and pool in a subcutaneous hematoma — a collection of blood that builds up in the soft tissue beneath the surface.
Here is the problem. The perineum and lower belly are folds. Bruising there is not as visible as on an arm. Men and their clinicians can overlook it.
That is what this case report is about.
What happened to the patient
The patient underwent a routine transperineal biopsy that confirmed prostate cancer. Soon after, bruising appeared across the lower abdomen and perineum.
It was more extensive than typical post-biopsy bruising — large, tender, and spreading.
The care team acted fast. They took him for prostatic artery angiography, an imaging test that uses dye and X-rays to find the exact blood vessel that is leaking. Think of it as a live map that highlights the exact leaky pipe behind a wall.
Once the bleeding vessel was identified, they performed superselective prostatic artery embolization. That means threading a tiny catheter to the specific artery and plugging it with medical material — closing off the leak without touching the healthy tissue around it.
Endocrine therapy, part of the patient's cancer plan, continued alongside.
How he recovered
The hematoma resolved quickly after embolization. At three-month follow-up, tumor markers were stable and routine blood work had returned to pre-biopsy baseline.
In other words — the complication was caught, fixed, and did not derail his cancer care.
That last part is the real reassurance. Subcutaneous hematoma is not the end of the story. It is a bump that, with the right response, a team can smooth out.
What this means for you or someone you love
If a prostate biopsy is on your calendar, this is not a reason to cancel. Transperineal biopsy remains one of the safest options for diagnosing prostate cancer.
But it is a reason to know what to watch for.
After the procedure, note any bruising that appears in the groin, perineum, or lower belly. Small discoloration is normal. Spreading, deepening, or tender bruising is not.
Signs that warrant a call to your doctor within hours, not days:
- A growing patch of purple or black-blue skin in the groin area
- Increasing pain or fullness in the perineum
- Difficulty urinating
- Feeling lightheaded, weak, or unusually pale
None of those are common. But all are treatable — especially when caught early.
An expert lens
Urologists generally describe transperineal biopsy as a safe, well-tolerated procedure with complication rates in the low single digits. Major bleeding is rare.
What this case report adds is a reminder that rare does not mean zero. And that the anatomy of the region can hide bleeding from view in a way that, say, a bruise on the thigh never would.
Interventional radiology — the specialty that performed the embolization — has quietly become the backup plan for these situations. A procedure that once might have required open surgery can now be handled with a pinpoint catheter.
Where this falls short as evidence
This is a single case report. It describes one patient, one complication, one successful fix. It does not tell us how often the problem occurs, which patients are at higher risk, or whether changes in biopsy technique could prevent it.
Large-scale data on transperineal biopsy safety already exists and is reassuring. But subcutaneous hematoma specifically is not well tracked.
Better registries would help.
Expect to see more interest in tracking post-biopsy complications as transperineal biopsy replaces the transrectal version in more clinics around the world.
For patients, the practical takeaway stays the same. A safe procedure is not a perfect one. Knowing what to watch for — and feeling empowered to call your doctor the same day if something looks wrong — is how rare complications stay rare and manageable.