"Got diagnosed with early stage squamous cell carcinoma of the throat a few weeks ago, but he is in full spirits today as he proceeds to battle it. As a family we are fortunate and blessed to have a leader like him," Hrithik captioned the picture in which the father-son duo have struck the same pose.
What is squamous cell carcinoma of the throat which Rakesh Roshan suffers from?
The note drew speedy recovery and good luck wishes from Modi, the film fraternity and fans.
A post on the @narendramodi Twitter handle read: "Dear Hrithik, praying for the good health of Shri Rakesh Roshanji. He is a fighter and I am sure he will face this challenge with utmost courage."
Hrithik's former wife Sussanne Khan wrote: "He is stronger than any superhero. All will go smoothly."
Other popular names who sent in wishes include Abhishek Bachchan, Tiger Shroff, Sanjay Kapoor, Aalim Hakim, Darshan Kumar, Nandish Sandhu, Dabboo Ratnani and Vishal Dadlani.
Rakesh Roshan diagnosed with early stage cancer; Tiger Shroff, Sussanne Khan & other Bollywood celebs wish him speedy recovery
The family has a cancer survivor in Sunaina Roshan, Hrithik's sister. She fought cervical cancer and survived it.
Apart from his acting career, Rakesh Roshan is known for directing films like "Kishen Kanhaiya", "Karan Arjun", "Kaho Naa... Pyaar Hai", "Koi... Mil Gaya" and the superhero "Krrish" film series.
UPDATE - “his surgery has gone off well”-Hrithik on Dad Rakesh Roshan who was diagnosed is early stage throat cancer!