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John Harrington, MD




Genetic Testing for Autism: What Can Be Done, How Helpful Is It?

January 26, 2011

In this podcast, Dr John Harrington of Eastern Virginia Medical School and Children’s Hospital of The King’s Daughters, and Dr Michael Paul, CEO and Rena Vanzo, Genetic Counselor of Lineagen-provider of a new integrated genetic testing and counseling service FirstStepDx-discuss the diagnosis of autism and genetic testing for autism.

Toddler With Chest Pain, Trouble Breathing, Cough After Heart Surgery

January 10, 2011

A 3-year-old boy with chest pain and trouble breathing that had developed over the past 24 hours was brought to the emergency department. The parents reported that his most prominent symptom was a cough. The chest pain appeared to worsen with coughing. He had undergone open atrial septal defect repair about 3 weeks before presentation.

Boy With Annular, Asymptomatic, Flesh-Colored Wrist Lesion

May 01, 2009

A 7-year-old boy with annular, asymptomatic, flesh-colored lesion onthe wrist that had developed slowly over the past month. The parents hadremoved the child from school because they were told that the lesion wasringworm. The lesion had failed to resolve after application of an antifungalcream for 10 days.

Sacrococcygeal Pilonidal Sinus

October 01, 2008

The cause was pilonidal sinus disease. The term pilonidal is derived from the Latin words "pilus," meaning "hair," and "nidus," meaning "nest." Pilonidal sinus disease is more common in males than in females and typically appears during adolescence. About 1% of all males and 0.1% of all females have an asymptomatic pilonidal sinus with potential for disease.1 The suspected overall incidence is about 1 in 5000. The disease seems to be most prevalent in those with stiff, dark or auburn hair, although it has been observed in all races.2

Tinea Capitis

July 01, 2008

In this infant, microscopic examination of a potassium hydroxide preparation of scalp scrapings revealed Trichophyton tonsurans, which is the most common causative organism in North America.

Incontinentia Pigmenti

April 01, 2008

IP is a rare X-linked dominant disorder. About 700 to 1000 cases have been reported worldwide (about 1 in 50,000 live births); white infants are most commonly affected. In a review of 653 patients, more than half had a family history of the condition.1 Our patient's mother was also affected. IP usually appears within the first 2 weeks of life. The severity and expression of the disorder are highly variable, even among patients within the same family.1,3 The condition is characterized by anomalies of the organs and tissues derived from the ectoderm and mesoderm and may affect the skin, hair, nails, teeth, eyes, and CNS1,2: