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Grey's Anatomy

Grey's AnatomyABC

Season 15, Episode 20

7 medical diagnoses portrayed

Watch on Amazon
Thymomamajor

Also known as: Thymus tumor

AnemiaImmunodeficiency

10-year-old autistic boy with a malignant thymoma causing severe anemia and immune dysfunction. His case is complicated by his rare Rh-null (golden) blood type, making transfusion nearly impossible as fewer than 50 people worldwide have this blood type.

Grey's Anatomy — S15E20Patient: Gus Carter

Also known as: Golden blood

Severe anemiaInability to receive standard blood transfusions

Gus has an extremely rare blood type (Rh-null) with fewer than 50 documented cases worldwide. This prevents standard blood transfusions and complicates his surgical treatment for thymoma, as only four potential donors have been found globally.

Grey's Anatomy — S15E20Patient: Gus Carter

Also known as: Penis bitten off

Psychological traumaPTSDLoss of sexual function

29-year-old veteran who sustained major injuries to his pelvic area and lower extremities from an IED blast in Afghanistan. He is undergoing an abdominal wall, penis, and scrotum transplant—a complex procedure that Catherine Fox pioneered.

Grey's Anatomy — S15E20Patient: Caleb Hicks

Also known as: PTSD

Relationship breakdownSocial withdrawal

Caleb suffers from severe PTSD following his combat injuries, which led him to break up with his fiancée and isolate himself. His mental health is addressed as a critical component of his readiness for transplant surgery.

Grey's Anatomy — S15E20Patient: Caleb Hicks
Appendicitissupporting

Also known as: Inflamed appendix

Bowel infarctionMeckel's diverticulum with band causing ischemia

24-year-old fitness influencer admitted with severe right lower quadrant abdominal pain and an inflamed appendix. During surgery, DeLuca discovers a Meckel's band causing bowel ischemia, requiring conversion to an ileocecectomy.

Grey's Anatomy — S15E20Patient: Alicia Davis
Ischemic bowelSmall bowel necrosis

Incidental finding during appendectomy—a congenital anomaly where a Meckel's band was kinking off blood supply to the small intestine, causing necrosis and requiring an ileocecectomy.

Grey's Anatomy — S15E20Patient: Alicia Davis

Also known as: Depression

Jo is experiencing severe depression following her visit to her birth mother, presenting with physical symptoms (body aches, fatigue, social withdrawal) and refusing to leave her apartment or return to work for over a week.

Grey's Anatomy — S15E20Patient: Jo Karev
Recurring storyline