What term describes the presence of pus in a tissue?

• A. Fluctuance
• B. Pallor
• C. Induration
• D. Nodular

Answer: (A)

The term that describes the presence of pus in a tissue is fluctuance. Fluctuance specifically refers to a palpable wave-like motion felt upon applying pressure to a tissue that contains fluid, especially pus. This occurs because pus is typically a thick, viscous fluid formed during inflammation as a result of infection, and it can create a distinct feeling when the area is examined physically.

The other terms do not relate to the presence of pus. Pallor refers to an abnormal paleness of the skin or mucous membranes, often indicating a lack of blood flow or anemia. Induration describes a hardening of tissue due to inflammation or other pathological processes, which does not involve the presence of pus. Nodular refers to the formation of nodules, which are small lumps or masses in tissue that may or may not be related to pus presence. Understanding these distinctions helps in recognizing the clinical significance of each term in a medical context.