**Question:** All of the following are associated with gigantism / acromegaly, except

A. Increased growth hormone levels
B. Macroglossia (enlarged tongue)
C. Hypertension
D. Corneal ulcers

**Correct Answer:** D. Corneal ulcers

**Core Concept:**
Acromegaly and gigantism are related conditions caused by excessive growth hormone (GH) production, typically from a benign pituitary adenoma. Growth hormone plays a crucial role in promoting growth and development during childhood. In adults, normal growth hormone levels contribute to maintaining body composition, bone density, and overall health. When GH levels remain elevated in adults, it can lead to the characteristic features of acromegaly/gigantism, such as macroglossia (enlarged tongue), hypertension, and joint pain.

**Why the Correct Answer is Right:**
Gigantism and acromegaly are characterized by excessive GH secretion, which results in excessive bone and soft tissue growth. GH directly stimulates the production of insulin-like growth factor-1 (IGF-1) by the liver. Elevated IGF-1 levels contribute to the enlargement of bones, soft tissues, and organs, causing the gross physical changes seen in these conditions.

**Why Each Wrong Option is Incorrect:**
A. Increased growth hormone levels: This is the correct answer and is the main cause of acromegaly and gigantism.
B. Macroglossia (enlarged tongue): This is a common feature of acromegaly/gigantism due to the enlargement of soft tissues, including the tongue, caused by elevated GH and IGF-1 levels.
C. Hypertension: Elevated GH and IGF-1 levels can lead to hypertension due to increased vascular smooth muscle growth, thickening of arterial walls, and increased cardiac output.
D. Corneal ulcers: Acromegaly and gigantism do not directly cause corneal ulcers. Corneal ulcers are more commonly associated with factors like poor hygiene, contact lens use, or trauma, which are unrelated to GH excess.

**Clinical Pearl:**
Growth hormone-related conditions like acromegaly and gigantism are important to recognize due to their potential complications like hypertension, joint pain, and osteoarthritis. Corneal ulcers, however, are unrelated complications and should be ruled out in patients presenting with these symptoms. Corneal ulcers are more commonly associated with factors like poor hygiene, contact lens use, or trauma, rather than the primary condition itself.