Table sizes -a unknown table is the largest

[Ajit Aranha]

Hi,
While estimating the number of pages used by tables in SAPDB 7.3.0.48
I get the largest table with name m and   Used  pages   112159 . This is
not a table created by me, and it does not appear in SQLSTudio. What is
his table??
Regards,
Ajit
P.S.
I am getting table size using dataextract * from TABLESTATISTICS WHERE
Description = 'Used  pages' and owner='XYZ'