Hello and welcome to HCM,
Lump on the lower back above the hip bones can be due to a number of causes.
A X-ray of the lower back is required to assess the probable site of origin of the lump.
Since, the lump is just above the hip bone, it could be arising from the bone.
If the lump is arising from bone, it is probably a
cyst or
bone tumor.
If not arising from bone, the lump is probably a
soft tissue swelling.
Aspiration cytology can be performed on a soft tissue swelling.
In aspiration cytology, cells are aspirated from the swelling, spread on a slide and stained with appropriate stain.
The origin and nature of the lesion is determined with this investigation.
Consult your primary healthcare provider for clinical assessment and first line investigations.
Thanks and take care
Dr Shailja Puri