What is the most likely cause of the findings in this high-resolution CT scan?
A 35-year-old man is evaluated for a 2-year history of intermittent chest pain that is retrosternal, lasts for seconds to minutes, is unrelated to exertion, and does not radiate. It is occasionally associated with swallowing. Upper endoscopy is
A 48-year-old woman is evaluated for a rash on her legs, arthralgia and myalgia, low-grade fever, and fatigue of 4 weeks' duration.
A 67-year-old woman is evaluated for the abrupt onset of right-sided pleuritic chest pain and moderate dyspnea seemingly triggered by an episode of vigorous coughing during symptoms typical of an upper respiratory infection. She smokes and has COPD.
A 66-year-old man is evaluated in the emergency department following a fall 3 days ago, when he struck the right side of his chest against a table. Since that time he has experienced right-sided pleuritic chest pain and difficulty taking a deep
A 37-year-old man is evaluated for a 4-month history of progressively worsening red, scaly lesions involving the scalp, trunk, and extremities. During the past month, he also has had pain in the hands and feet and has lost 4.5 kg (10.0 lb). Aspirin
CT is readily available, can be quickly performed, and is the test of choice to rule out intracerebral hemorrhage, subarachnoid bleeding, and hydrocephalus, which may require rapid neurosurgical intervention. ... CT of the head without contrast is the
A 29-year-old woman is evaluated for a petechial rash of the lower extremities of 3 weeks' duration. The patient reports no bleeding problems except for recent, occasional bleeding from her gums after brushing. Physician examination reveals
A recent HIV test was negative. He has used smokeless tobacco for 14 years.
A 65-year-old man is evaluated because of painless neck swelling and difficulty swallowing that has progressively worsened over the last year. He does not have hoarseness, but he feels as though his voice is not as strong as it was in the past.