On the 4th day of my abortion, a vaginal ultrasound depicted that part of the tissue is still inside me. Is this an alarming situation? Shall I opt for a D & C?
Can it cause Cancer?

What did your doctor recommend?

You return to the doctor for his medical opinion. Next why cancer, did your doctor mention it?

No no, the doctor never mentioned it, I am myself only thinking loud.
Now, the doctor said I should opt for a D & C but given the blindness related to the process, I am slightly skeptical about it.

And since this morning, there have been few tissue discharges that were lengthy

Blindness related to the procedure? I've never heard of that.

Yes, considering there is still tissue in your uterus, you should opt for the D&C.

I am in India and here mostly doctors perform a D n C without using an ultrasound machine