NBA Star, Lamar Odom, who remains hospitalized after being found unconscious on October 13, has has been revealed to be in need of kidney transplant and the issues areserious.

Read: Rapper praises Khloe Kardashian for going back to Lamar Odom

A source close to the situation told Us Weeklythat Odom, 35, is "definitely" in need of a kidney transplant.

As reported by TMZ this past weekend, Odom has been suffering from major kidney failure and is currently on dialysis.

The source says that Odom has good and bad moments daily, and showed some progress.

"He can say a few words," the insider speaks of Odom, who has yet to speak in full sentences. "He's doing a tiny bit better, but he has a very long road back to full recovery , if that."

Another source says that Odom's brain injury is currently "of the most concern" for his famous in-laws, and wife, Khloe Kardashian, rushed to be by his side at Sunrise Hospital in Las Vegas when he was initially hospitalized.

The damage to Odom's brain would have been caused by the reported dozen strokes he suffered when he was found unconscious and transported to the hospital in critical condition.

"That's the most serious thing he's dealing with," the second insider adds.

Both sources agree that the full extent of damage done to Odom's body, brain included, will remain unknown for a while.

According to the first source: "The doctors just don't know the extent of all the damage yet. There are still a lot of tests that need to be done."

The second insider adds: "He'll get more of his motor skills back gradually, but cognitively, he's not where he used to be."

Read: How Lamar Odom's tragedy is affecting her beauty

Amid Odom's incremental improvement, Khloe resumed updating content on her paid app, which launched shortly before the incident at the Love Ranch South brothel occurred.

"Thank you dolls SO much for your patience while I needed some time off," Kardashian wrote on her website on Monday, October 26. "I'm excited to be back in the mix bringing you some awesome content. Your love and support has meant the world to me. XOXO, Khloe."

Khloe has also sworn to go through with the divorce if her husband returns to drugs.