Love this one. Canes are hollow, extremely light and easy to crush old ones in the spring. Brown canes are last years.

Any ideas?

That is Japanese knotweed Fallopia japonica, syn. Polygonum cuspidatum, It is a horribly invasive plant that is nearly impossible to get rid of.

Does it also have pink flowers or is it a related plant

Unfortunately your ID looks spot on and it's on the prohibited list in MA. Oh well, hack, hack and another on bites the dust.
Charlie, if your asking me the flowers are white which matches the databases I've looked at.

The roots can go up to 4 feet deep (oh, yes, I speak from experience), so dig deep. RoundUp will eventually kill it, but any tiny bit of root will happily sprout up again. I've been fighting it for 20 years and have knocked it back a bit...

There's very little present here but it seeded from my neighbors. So while I can deal with it now I'm sure it will come calling again.

I've been fighting it for 11 years now. Unfortunately the neighbor likes it and lets it go to bloom.

The pink flowered plant I had in mind is Lady's Thumb Polygonum persicaria, a related species
All are edible,however some species may cause light-sensitive reactions

I've become more aware of it since these comments and I'm seeing HUGE stands of it on the roadside here and there. The photos I posted are of a stand that's been there for quite a few years but, as it's in deep shade fighting with the White Pines for resources, it hasn't really expanded. There were several seedlings however which have been dealt with.

They planted it along banks to keep them from eroding - think kudzu and multiflora roses, plants that someone thought were a great idea...