I'm scared - lump in abdomen

[gnarlington]

Hi, my DS is 4 and he has always been an irregular poo'er. It's never seemed to bother him, he just doesn't go for a few days, then has one or two a day for a few days, then goes back to not having them for a few days.
A couple of weeks ago he really struggled to get a couple out to the point he was crying and sweating. Once he got a couple of really hard ones out he went back to his usual.
Now he is having one every few days and has seemed ok with it, but today I have noticed his tummy looks huge and I have just had a feel while he is sleeping and he has quite a big lump just below his ribs.
I googled (stupid) and one of the common things coming up is Neuroblastoma, so of course I'm panicking.
Anyone have any experience?
Oh, and I promise I am not a poo troll

Lactulose didn't work for mine. The paediatrician advised me that regular Movicol is totally harmless and absolutely fine for long term use.

Yep. Big doses of movicol/laxido for clearing things out, smaller doses for keeping things nice and soft.

Thanks for the tips. Think I'll go back and see if they have anyone who specialises in it.

DD had this (massive poos every few days). we were put in a movicol clear out regime (messy) and then a maintainance dose to keep things moving. She was on movicol 1.5 years as the bowel was so overstretched, it needed so long to shrink back into shape. Paed told us that it usually takes at least as long (i.e. daily movicol) for the bowel to shrink back as the constipation had been going on.

DD was also checked for cealics disease via blood test (negative). we tried cutting gluten out which made a big difference to DD so paed assumes a gluten intolerance was the underlying reason for her constipation.