A case of Encapsulated Papillary Carcinoma of the Breast in an Elderly Male with Unusual Presentation

Imagine the human breast as a bustling city. Usually, when things go wrong there, it's a chaotic, fast-moving riot. But in this very rare story, the troublemaker is a quiet, slow-moving ghost named Encapsulated Papillary Carcinoma (EPC). It's so uncommon that it only shows up in about 1–2% of breast cancers in women, and even rarer in men (who make up just 2–7% of all EPC cases).

Here's the tale of an 80-year-old man from Nigeria who became the star of this unusual case.

The Mystery Guest

Our patient, a gentle giant of a man with high blood pressure that was under control, walked into the hospital with a story that had been unfolding for two years. He had a lump in his left breast that started out painless but eventually turned into a painful, ulcerated sore on his nipple.

When the doctors took a look, they saw something shocking: a massive, firm lump behind the nipple area. It was huge—measuring 14 x 10 x 5 cm (that's about the size of a large grapefruit!). The skin over it was broken and ulcerated, and the nipple itself was gone, distorted by the growth. But here's the twist: despite the scary size, the lump wasn't stuck to the chest muscle underneath, and there were no swollen lymph nodes in his armpit. It was like a giant, isolated island in the middle of the breast city.

The Big Operation

Because the lump looked so aggressive and ulcerated, the medical team suspected a very advanced cancer. They decided to perform a simple left mastectomy (removing the entire breast) to get the whole thing out.

During the surgery, they found something interesting. The mass was indeed huge and had a nasty, dead-looking surface, but deep down, it was sitting inside a neat, well-defined "bubble" or capsule. It wasn't invading the muscle; it was just sitting there, contained. The patient did well, got some blood transfusions (his red blood cell count was low at 7 g/dl), and went home three days later with antibiotics and painkillers.

The Detective Work (What the Microscope Revealed)

Once the tissue was in the lab, the real detective work began. The pathologists sliced through the 16 cm wide specimen and found a greyish-white, bloody mass. Under the microscope, it looked like a delicate, papery flower growing inside a cyst (a fluid-filled sac).

The cells lining this "flower" were column-shaped and cubical, sitting on tiny, fibrous stems. They looked a little messy, but not too crazy (low to intermediate grade). The key clue? The doctors looked for a specific type of cell called myoepithelial cells (think of them as the security guards that usually surround breast ducts). In this tumor, the security guards were missing.

To be absolutely sure, they used a special stain called P63. It's like a highlighter that lights up myoepithelial cells if they are there. In this case, the highlighter found nothing. This confirmed the diagnosis: Encapsulated Papillary Carcinoma. It was a non-invasive cancer, meaning it hadn't broken out of its capsule to attack the rest of the body. The edges of the surgery were clean, with no cancer left behind.

What This Story Tells Us

This paper highlights a few key things, but it also rules out some scary ideas:

• It's not a runaway train: Even though the lump was massive and ulcerated, the paper confirms that EPC is usually an "indolent" (slow-moving) tumor. It tends to stay local. The paper explicitly rules out the idea that this was a fast-spreading, metastatic cancer; the chest X-ray showed no spread to the lungs, and the lymph nodes were clear.
• It's not a "maybe": The diagnosis wasn't just a guess. The paper states that the diagnosis was confirmed by the P63 stain and the absence of myoepithelial cells. It's not merely suggested; the evidence points directly to this specific type of cancer.
• The treatment is simple (if caught right): Since there was no invasion or spread, the paper argues that complete surgical removal is the right move. It suggests that chemotherapy and radiation aren't needed unless the cancer has invaded or spread to the nodes. In this case, the surgery was enough.

The Takeaway

The authors conclude that EPC is a rare, slow-growing tumor that can still look scary on the outside (like this ulcerated mass). They suggest that doctors need to keep a "high index of suspicion" for this in elderly patients, even men.

The prognosis for this specific type of cancer is excellent. If it hasn't invaded or spread, the 10-year survival rate can reach 100%, and the disease-free survival rate can be as high as 90%.

Our patient? He's doing great. He's had two follow-up visits with no signs of the tumor coming back. It's a reminder that sometimes, even the scariest-looking lumps turn out to be the quiet, contained kind that can be successfully managed with a good surgeon and a keen eye.