Jay make the appointment early and have the lump checked out it could be drainage fluid and what not, a cooked salivary gland, or even just a lump from where the drain was placed but best to have it checked out ASAP.
Is the lump firm?

Also it's good to get to know what's normal for her neck.

Take care



Cheryl : Irritation - 2004 BX: 6/2008 : Inflam. BX: 12/10, DX: 12/10 : SCC - LS tongue well dif. T2N1M0. 2/11 hemigloss + recon. : PND - 40 nodes - 39 clear. 3/11 - 5/11 IMRT 33 + cis x2, PEG 3/28/11 - 5/19/11 3 head, 2 chest scans - clear(fingers crossed) HPV-, No smoke, drink, or drugs, Vegan