Not a patient of mine, but described to me by a colleague in obstetrics;
It was determined in her second trimester (weeks ~12-26 of pregnancy) that this patient was due fraternal twins, one of which was likely to be profoundly disabled.
She was given the option to terminate, with lots of psych/social work consultation throughout. However, the termination would inevitably be of both twins.
She decided to carry the twins to term, adopting out the disabled infant, and keeping the healthy one.
She requested the treating team inform her extended family that the disabled twin had passed away. They (sort of) obliged, without being explicit. That's a dilemma for medical teams because we're perfectly entitled to lie by omission, but it's an individual clinician's decision whether or not they adhere to a narrative. We certainly aren't obliged (or even advised) to.
I'd be interested in opinions about the ethics of a case like this. Obviously extremely rare (blue-moon sort of scenario), but very complex and quite emotionally taxing for the clinicians involved.