From IMDB:

A difficult situation gives two distant brothers the opportunity to get to know each other deeply.

From Netflix:

An entrepreneur prone to partying and his estranged brother, a teacher resigned to a humdrum life, begin to bond under fragile circumstances.

From Netflix you can stream this 1.5 hour complete Italian film with English subtitles.

Matteo is the successful playboy and his brother Ettore is a quiet and very ordinary man.  Ettore has a fatal, malignant brain tumor but supposedly (or so Matteo believes) does not know what his illness is. Matteo goes to great lengths to keep the truth from Ettore.

Because of their great differences, the once close brothers have drifted apart. In the background Matteo is busy partying and chasing male gay conquests. Ettore has fallen out of love with his wife and is now in love with a new woman.  Both brothers are part of a large, noisy Roman family complete with zany mother. As the plot progresses, the somewhat dissolute Matteo works hard to keep Ettore on track with his hospital treatments.  Despite arguments and physical fighting, eventually the brothers realize their love for each other.

For some reason this film, which is certainly not for everyone, kept me watching. Probably it was the real humanity portrayed that was most appealing.