At 5 weeks post-op, there is bound to be residual dead fat, blood, and scar tissue that need to go through the healing and maturation process that takes 6-12 months. Firmness is common, and is increased when liposuction is performed. I prefer direct fat excision via a slightly longer incision for this reason, as I can obtain meticulous hemostasis under direct vision, which is impossible with liposuction, Whatever bruising/bleeding you get with liposuction, you get, and it takes longer to soften and heal, and can sometime be lumpy and irregular. Another part of why I have abandoned liposuction under the neck.But this remains a common operation, and many patients have the exact same occurrence you are describing, so be patient. Don't massage too much, and don't gain weight during this time of increased metabolic activity in this area. Best wishes! Dr. Tholen