Varicose veins of the legs, as well as esophageal varices, hemorrhoids and varicocele of the scrotum, are all characterized by which of the following pathologic features?

A 72-year-old woman complains of shortness of breath on exertion. She states that she also becomes short of breath at night unless she uses three pillows to prop herself up (orthopnea). Physical examination reveals mild obesity, bilateral pitting leg edema, an enlarged liver, and fine crackling sounds on inspiration (rales). A chest x-ray shows cardiomegaly. What is the most likely cause of orthopnea in this patient?

A 64-year-old woman with bilateral. varicose veins of her legs developed sudden onset\ chest pain. and expectorated blood the next day (hemoptysis). What could have caused the patient’s symptoms?

A sputum sample obtained from a 68-year-old former construction worker reveals needle-like inert minerals (shown). This patient is at increased risk of developing which of the following malignant neoplasms?

A 58-year-old woman with a history of cigarette smoking complains of shortness of breath (dyspnea). Physical examination reveals no signs of congestive heart failure. Radiological abnormalities are limited to evidence of over-inflation of the patient's lungs. Which of the following is the most likely diagnosis?

A 5-year-old girl had a sudden attack of suffocating cough accompanied by wheezing. There was no fever but the child appeared anxious and in distress. What is the most likely diagnosis?

A 33-year-old woman delivers a healthy neonate at 38 weeks gestation. Two days later, the mother collapses in the nursery. Examination of medical records shows that the patient's father died at age 45 due to complications of Marfan syndrome. Blood pressure is 110/50 mmHg and pulses are diminished, Cardiac auscultation reveals a diastolic murmur. Which of the following is the most likely diagnosis?

A 22-year-old construction worker falls 30 feet and fractures several bones, including his left femoral shaft. Six hours later, the patient develops shortness of breath and cyanosis. Which of the following hemodynamic disorders best explains the pathogenesis of respiratory distress in this patient?

A 92-year-old woman is brought unconscious to the emergency room from a nursing home. Her blood pressure is 70/30 mm Hg. She is febrile (102°F) and breathing rapidly (tachypneic). Laboratory studies demonstrate an elevated white blood cell count with 92% segmented neutrophils. Urinalysis reveals gram-negative organisms. Which of the following types of shock most likely accounts for this patient's signs and symptoms?

A 50-year-old alcoholic man was brought to the Emergency Department in respiratory distress, complaining of stabbing chest pain on inspiration and sudden onset chills. He was running a high fever (104°F), coughing, and expectorating a thick yellow- green sputum. Which of the following is the most likely cause of his respiratory distress?

A 48-year-old man with a history of heavy smoking presents with a 3-year history of persistent cough and frequent upper respiratory infections, associated with sputum production. Analysis of arterial blood gases reveals hypoxia and CO2 retention. Which of the following is the appropriate diagnosis?