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Osteogenic Sarcoma

One of the most common types of bone cancer in children usually occurring in the long bones, such as the arms, legs and pelvis.

Osteomyelitis

An infection in the bone, usually in the long bones but can affect any bone in the body, most commonly in premature infants and babies born with complications.

Osteoporosis

A skeletal disorder characterized by decreased bone strength due to loss of bone mass/density, resulting in an increased risk of fractures (breaks).

Otitis Media (Ear Infection)

Inflammation of the middle ear, often occurring with a viral upper respiratory tract illness, and is one of the most common diagnoses for U.S. children.

Otolaryngology (ENT)

Lurie Children's Division of Otorhinolaryngology - Head and Neck Surgery provides medical and surgical treatment for children with disorders of the ears, nose and throat (ENT), treating more children for ENT conditions than any other hospital in Illinois.

Outpatient Psychiatric Services

Lurie Children's Outpatient Psychiatric Services Program provides more than 18,000 clinical visits yearly, for anxiety disorders, psychoses, behavior problems, school problems, affective disorders, PTSD, developmental delay and adjustment problems.

Ovarian Cryopreservation Procedure

Ovarian cryopreservation for fertility is a procedure needed due to childhood cancer treatment. Learn more about ovarian tissue freezing here.

Ovarian Cysts

An accumulation of fluid in the ovary encapsulated inside a thin wall of tissue, very common especially in women of childbearing age, and usually harmless.

Ovarian Torsion

When the ovary twists on its axis, twisting its venous and lymphatic vessels and thus shutting down its blood supply, causing severe abdominal pain, nausea and vomiting.

Ovotesticular Difference of Sexual Development

The rarest of sex development abnormalities, in which both female ovaries and male testicles are present in the child at birth.

Oxalosis

A rare metabolic disorder characterized by recurrent kidney and bladder stones, caused by an overproduction of oxalate.

Awards & Accolades

Lurie Children's is proud to be recognized for the following awards, accolades and achievements.

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