A patient came with exudative lesions in cubital fossa, popliteal fossa & neck. The diagnosis is
**Core Concept**
The patient's presentation with exudative lesions in specific areas such as the cubital fossa, popliteal fossa, and neck suggests a condition characterized by lymphatic obstruction or dysfunction. This condition leads to the accumulation of protein-rich fluid in these areas, resulting in the formation of lesions.
**Why the Correct Answer is Right**
The correct diagnosis is Lymphedema, specifically Primary Lymphedema. Lymphedema is caused by the obstruction of lymphatic vessels, leading to the accumulation of lymph fluid in the interstitial tissue. In Primary Lymphedema, the obstruction occurs due to congenital or developmental anomalies of the lymphatic vessels. The cubital fossa, popliteal fossa, and neck are common sites affected by lymphedema due to their high concentration of lymphatic vessels.
**Why Each Wrong Option is Incorrect**
**Option A:** This option is incorrect because it does not match the clinical presentation of exudative lesions in specific areas.
**Option B:** This option is incorrect because it does not account for the primary cause of the condition, which is lymphatic obstruction.
**Option C:** This option is incorrect because it is not a condition characterized by exudative lesions in specific areas.
**Clinical Pearl / High-Yield Fact**
Lymphedema can be classified into primary and secondary types. Primary Lymphedema is a congenital or developmental anomaly, while Secondary Lymphedema is acquired due to external factors such as infection, trauma, or surgery.
**Correct Answer:** C.