Basic and Clinical Sciences (BCSE) Practice Exam

Disable ads (and more) with a membership for a one time $4.99 payment

Prepare for the Basic and Clinical Sciences Exam. Study with our quizzes featuring multiple choice questions, hints, and explanations. Boost your confidence for the test!

Practice this question and more.


What is a common characteristic of pleural effusions in TB patients?

  1. Unilateral involvement

  2. Complete resolution without treatment

  3. Always bilateral

  4. Presence of pus only

The correct answer is: Unilateral involvement

Unilateral involvement is a common characteristic of pleural effusions in patients with tuberculosis (TB). In TB, the infection primarily affects one lung, leading to the accumulation of fluid in the pleural space on that side. While it's possible for TB to affect both pleurae, it is more frequently associated with unilateral pleural effusion, which can be a result of the localized inflammation and infection in the lung tissue. Other options are less characteristic of TB-related pleural effusions. For instance, pleural effusions due to TB typically don't resolve completely without treatment, indicating that medical intervention is often necessary to address the underlying infection and fluid accumulation. It's also not accurate to say that pleural effusions are always bilateral; while they can be, this is not a defining feature. Moreover, the presence of pus suggests an empyema, which is a specific type of pleural effusion that may occur in TB cases, but the presence of non-purulent effusions is common as well. Thus, unilateral involvement stands out as the primary characteristic in the context of TB-related pleural effusions.