Hi there,
I don't think your breasts are strictly speaking tubular, but I have what I hope is good news.
Your breasts have volume, some asymmetry, and a large nipple areola, with droop. This is a situation where with a lollipop lift, nipple areola reduction, and correction of asymmetry beautiful results can be obtained. Your breast tissue looks to be firm which is a big help.
This surgery should not interrupt future breast feeding, nor nipple sensation. It ca be done as day surgery.
The scars are permanent but fade over time very well.
All in all, I believe you're a very good candidate for surgery. You done need implants to achieve a great shape, implants would only be necessary if you wanted substantially larger breasts.
Consult, when you're ready, with an excellent specialist plastic surgeon in your area, and find out about your options.
All the very best.
Howard Webster