I am part of an organisation that uses Scrum Agile methodology to develop software solutions. The Scrum Guide defines a 'Product Backlog' in a positive way as a "living artefact" i.e. under perpetual review where items with the most 'value' rise to the top.
However, as an organisation we also get 'work' that ideally we would deal with immediately but often we don't and so it tends to accumulate to the point where it would take a lot of time and effort to clear. People in the organisation use the word 'backlog' in this pejorative sense.
Because 'Product Backlog' is a 'good' term prescribed by Scrum, I want to find another term that better describes the 'bad' accumulation of work.
In many ways 'cancer' is a good fit: procrastination or denial makes treatment more difficult and leads to dire outcomes. However, because we are in the healthcare sector, this isn't appropriate! Also, it doesn't fit the usage e.g. "We have a two-year backlog of blah work right now."