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www.reference.com/article/bilateral-hearing-loss-1201a6e4f722f95

Bilateral hearing loss occurs when an individual experiences loss of hearing in both ears, according to West Newton Hearing Center. Such hearing loss may be congenital or acquired, and it may appear gradually or at once. Hearing loss in one ear is called unilateral hearing loss.

www.reference.com/article/bilateral-pneumonia-acdfcffe18e3a5c8

Bilateral pneumonia, also known as double pneumonia, means at least one lobe in both lungs has the disease, according to MedicineNet.. The diagnosis does not indicate a more severe pneumonia nor the cause of the disease in the lungs. Pneumonia is a lung infection caused by bacteria or viruses. Sympt

www.reference.com/article/benefits-bilateral-knee-replacement-48b01fd4ba56f5c1

The benefits of bilateral knee replacement include fewer surgeries and shorter recovery periods, explains Men's Health Advisor. Shorter overall hospital stays and, as a consequence, reduced costs for both patients and medical facilities are other benefits, note G. Stubbs and other researchers in a s

www.reference.com/world-view/symptoms-bilateral-renal-cysts-2531e374ad2c959d

Symptoms of bilateral renal cysts include fever, upper abdominal pain, back pain and side pain, according to Mayo clinic. Other symptoms include frequent urination and blood stained urine, notes Cleveland Clinic. In very rare cases, renal cysts can impair kidney functions, states WebMD.

www.reference.com/article/example-animal-bilateral-symmetry-8feb56260d95672b

A mouse is an example of an animal with bilateral symmetry. If an imaginary line were drawn from the tip of its nose to the end of its tail, one side would be exactly like the other.

www.reference.com/article/causes-swelling-c051660f4b694cd3

Swelling can be localized or affect the whole body, according to WebMD. Causes of localized body swelling include injury, inflammation, burns, infections under the skin or in a joint, and insect bites. Certain medications, allergens, circulation problems and autoimmune diseases may cause generalized

www.reference.com/science/advantages-bilateral-symmetry-animals-9224fa1fea57d185

While scientists are still trying to determine the different ways that bilateral symmetry in animals is advantageous, the most obvious benefit is that it enhances an animal’s mobility. It allows fluid movement in a particular direction, which helps when an animal is searching for food or trying to e

www.reference.com/article/causes-swelling-after-back-surgery-a165b9b101c8e8b7

The causes of swelling after back surgery are blood clots and infections, states the University of Maryland Medical Center. Infections occur in the incision area, either at the surface or in the deep tissue, and are accompanied by redness, swelling, heat, drainage and fever. Although infections are

www.reference.com/article/causes-swelling-lower-leg-f643ad7c0c472c42

Swelling of the lower leg can be caused by several different factors that include standing for extended lengths of time, sitting in the same position for long periods, blood pressure medicines and steroids, explains Healthline. Being overweight can also cause lower leg swelling.

www.reference.com/article/causes-legs-swell-43fd2e3072eb7eaf

Leg injuries, leg infections, leg surgery, certain medications and blood clots in the leg may cause a leg to swell, according to MedlinePlus. Aging and problems with the heart, liver or kidney may cause legs to swell. The swelling may spread to other areas, including thighs and calves.