Which of the following condition is characterized by presence pf hyaline deposits in alveolar walls?
**Core Concept**
Hyaline membrane disease, also known as respiratory distress syndrome (RDS), is a condition that affects premature infants, characterized by the presence of hyaline deposits in the alveolar walls. This condition is primarily due to a deficiency of surfactant, a substance that reduces the surface tension in the lungs, facilitating easier expansion during inhalation.
**Why the Correct Answer is Right**
The hyaline membranes in RDS are formed as a result of the coalescence of fibrin, cellular debris, and other substances, which accumulate in the alveoli due to the lack of surfactant. This leads to atelectasis, inflammation, and increased pulmonary resistance. The absence of surfactant in premature infants is often due to the immaturity of the type II pneumocytes, which are responsible for surfactant production.
**Why Each Wrong Option is Incorrect**
**Option A:** This option is incorrect because it does not specify the condition characterized by hyaline deposits in alveolar walls.
**Option B:** This option is incorrect because it is a type of pneumothorax, not related to hyaline deposits.
**Option C:** This option is incorrect because it refers to a different condition, characterized by inflammation of the lung tissue.
**Clinical Pearl / High-Yield Fact**
It is essential to remember that surfactant replacement therapy has become a standard treatment for RDS in premature infants, significantly improving their prognosis and reducing mortality rates.
**Correct Answer: C. Hyaline membrane disease**