An abnormal Rudbeckia

Studies on Chemical Composition and Antioxidant Activity of Rudbeckia triloba

The paper describes the physicochemical studies made on the decorative plant, Rudbeckia triloba (Asteraceae). For this purpose, essential oil, infusion, decoction, and hydroalcoholic macerate obtained from different aerial parts of Rudbeckia triloba were analyzed. The main phytochemical constituents identified by GC-MS analysis were found to be α-pinene (in dried leaves (46.0%) and flowers (40....

An abnormal chest radiograph.

Volume 90, Number 1 www.aafp.org/afp American Family Physician 47 A 24-year-old asymptomatic man requested a chest radiograph for routine tuberculosis screening. He did not have difficulty breathing, palpitations, chest pain, or edema. His medical history was significant for scoliosis and Rubinstein-Taybi syndrome, a rare genetic condition that causes short stature, broad thumbs and toes, hirsu...

An Asymptomatic Man With an Abnormal ECG.

A 76-year-old man presented for a routine health evaluation. He reported no symptoms and the cardiovascular physical examination was within normal limits. He takes amlodipine for hypertension. He was referred for a cardiology evaluation after the following ECG was performed. Please turn the page to read the diagnosis. Juan Carlos Brenes, MD Carlos Brenes-Pereira, MD Alfonso Tolentino, MD Cornel...

Abnormal Nails in an Infant

An abnormal chest x-ray.

A 51-YEAR-OLD white man with a 45-year history of smoking was noted to have an abnormality on a routine chest x-ray. He denied any history of cough, sputum production, chest pain, dyspnea, weight loss, weakness, or tuberculosis. There was no previous chest x-ray available for comparison. The patient’s physical examination results were unremarkable. His chest x-ray is shown in Figure 1 and a com...