A 55-Year-Old Man Comes to the Office Due to Malaise

question 51

Multiple Choice

A 55-year-old man comes to the office due to malaise and cough over the past 2 months.  He describes yellow sputum production with occasional streaks of blood.  The patient smokes a pack of cigarettes daily and has a history of alcohol use disorder with prior episodes of binge drinking.  Temperature is 37.1 C (98.8 F) .  Examination shows poor dentition with dental caries, gingivitis, and enlarged submandibular lymph nodes.  Coarse rhonchi are heard during auscultation of the right lung.  Chest CT scan reveals an extensive right lung consolidative process with air bronchograms.  Bronchoscopy is performed, and a lung biopsy specimen shows the findings in the image below. Which of the following is the most likely diagnosis?

• A)Actinomycosis
• B)Adenocarcinoma
• C)Mucormycosis
• D)Sarcoidosis
• E)Tuberculosis

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Definitions:

Color

The characteristic of visual perception described through hues such as red, blue, and yellow, determined by the wavelength of light.

Color Constancy

The ability of the human visual system to perceive colors of objects, invariant to the color of the light source.

Brain Region

Specific areas within the brain that are responsible for different functions, such as the hippocampus for memory or the frontal lobes for decision making.

Off-Surround Cell

A type of neuron in the visual system that is inhibited when light falls on its surrounding area, enhancing contrast detection.