Perineal nodular induration (solid lump on perineum)

I’ve developed a relatively large lump on the right side of my perinium over some number of months, a solid thing 1-2 cm in diameter well below the skin. I figured it was a saddle sore until a week ago. guessing it got bigger the past few weeks.

It seems likely to be Perineal nodular induration, or cyclist’s nodule. I’ll head to the doctors to double check next week.

Has anyone else experienced one? I was surprised google found no obvious thread about it on here.

https://pmc.ncbi.nlm.nih.gov/articles/PMC10889187/

Never heard of this before but a quick skim of the link seems rather different to a lump under the skin.  I have a small lump there 1cm ish – I think its a lipoma

What they describe in the link and the pics are much more in the skin not under it.  a lipoma is just a benign fatty lump.  Mines been there for years.

A quick search says lipomas in the perineum are rare but possible

worth getting checked tho I guess

I think ‘well below the skin’ was actually an exaggeration on my part. I just mean far enough below the skin that it doesn’t seem like a typical spot/sore. Not to say my diagnosis is correct. I only quickly googled Lipoma, and it suggests they aren’t painful, while mine certainly is…

I think one problem I have is a potentially obvious one — the seat on my road bike may be too narrow (132mm). This lump may have developed since I bought this thing — guess that’s the consequence of grabbing a bargain off eBay without actually thinking it through.

I really wish I hadn’t looked at that link….

I’ve had a few. I changed saddles to one where you sit much more on your sit bones than your undercarriage (Selle Italia Boost models are good for this, as are many of the short-nosed Specialized ones) and they went away quickly.

If it helps, mine looks nothing like that… The third testies in that article is enourmous.

I’ve had a few. I changed saddles to one where you sit much more on your sit bones than your undercarriage (Selle Italia Boost models are good for this, as are many of the short-nosed Specialized ones) and they went away quickly.

That’s good to hear, thanks.

My only worry is that I have three different bikes with different seats, and only one of them is narrow, but I have pain on them all. Hopefully the narrow seat is the culprit (it is my road bike one, which sees the most miles) and switching that will mean the others are fine. Otherwise, it may be a more tricky issue.

I think I will change my commutor’s seat as well to be safe, but the one on my mtb if quite comfy and it’s a SS so I spend a lot of time out of the saddle anyway.

Is it your G spot?

there should be no pressure on your perineum on a bike seat  it should all be on your sit bones.  Try a noseless saddle?

Is it your G spot?

No, I’ve not invested in one of these yet

ISM Adamo saddles, John Cobb saddles (variously names Cobb or JCob)  or one of the Selle SMP Triathlon saddles, could become your best friend.

Both have nice wide grooves to eliminate pressure on that part if your anatomy.

I’ve got an Adamo on the TT bike (where the forward rotation puts a lot of pressure on that same area), the Cobb Maxx on my MTB and road bike, and the SMP ‘T4’ model on the gravel bike.

I know that absolutely everyone’s arse is different – but I just can’t tolerate a ‘traditional’ saddle that doesn’t have the middle section removed