3L:19386273 (release 6 coordinates) is the 5' end of a breakpoint associated with a deletion of 1877bp of genomic sequence.
3L:19388151 (release 6 coordinates) is the 3' end of a breakpoint associated with a deletion of 1877bp of genomic sequence.
The 5' and 3' ends of this breakpoint correspond to 3R:20637930 (release 6 coordinates), meaning that 1bp of genomic sequence is duplicated at this breakpoint.