im 32 yo male with hard boney lump about size of pea on right side of tailbone, have been suffering with suspected ibs,  booked in for colonosopy on 2/11/2011, also had recent back pain due to constipation? suffering internal hemoroids. the lump is not really painfull to touch but does hurt to sit on ie in the car sitting at desk, any ideas would be muchly appreciated.
Hi. Thanks for your query. From the history you have provided this hard lump looks to be a boil only. Being unresolved it will appear to be hard. There are no known cases to have bony lumps in this area. Please carry on the investigations as already planned. You will also get an opinion of the Doctor doing colonoscopy. This lump may get resolved with Site bath, antibiotic and anti-inflammatory medicines. If it does not further investigations may be required