**Core Concept**
Lymphangio myomatosis is a rare, progressive disease characterized by the abnormal growth of smooth muscle cells in the walls of lymphatic vessels, leading to their obliteration and subsequent lymphedema. This condition is often seen in young women and can cause significant morbidity due to respiratory symptoms and chylothorax.

**Why the Correct Answer is Right**
The correct answer will be the option that is NOT a characteristic of lymphangio myomatosis. The disease is indeed characterized by the proliferation of smooth muscle-like cells in the lymphatic vessels, which can lead to their obstruction and subsequent lymphatic dysfunction. The respiratory symptoms are often due to the involvement of the mediastinal lymph nodes and the obliteration of the lymphatic vessels in the lungs, leading to chylous effusions.

**Why Each Wrong Option is Incorrect**
**Option A:** This option is incorrect because it is actually a characteristic of lymphangio myomatosis. The disease is indeed associated with smooth muscle-like cell proliferation.

**Option B:** This option is incorrect because it is actually a characteristic of lymphangio myomatosis. The disease is indeed associated with lymphatic vessel obliteration.

**Option C:** This option is incorrect because it is actually a characteristic of lymphangio myomatosis. The disease is indeed associated with chylothorax.

**Clinical Pearl / High-Yield Fact**
It's essential to differentiate lymphangio myomatosis from other conditions that cause lymphedema, such as filariasis or radiation-induced lymphedema. Lymphangio myomatosis is a rare but aggressive disease that requires prompt recognition and treatment.

**Correct Answer:** None