**Question:** A patient has multiple meningiomas, acoustic neuroma and Hyperpigmented skin lesions; most likely diagnosis is –

A. Neurofibromatosis
B. Gorham-Stout syndrome
C. Carney complex
D. Multiple endocrine neoplasia (MEN)

**Core Concept:**

The presented symptoms and findings in the patient are indicative of a group of genetic disorders characterized by the development of benign tumors in various tissues. These disorders involve multiple neoplasms (growths) in various organs, including meningiomas and acoustic neuromas. The skin hyperpigmentation is a clue towards a specific diagnosis.

**Why the Correct Answer is Right:**

Among the options provided, the correct diagnosis for the patient is C. Carney complex (Carney's triad: mucosal melaena, pulmonary chondroma, and gastrointestinal neuroendocrine tumor). This is due to the presence of multiple meningiomas, acoustic neuroma, and hyperpigmented skin lesions.

Carney complex is an autosomal dominant genetic disorder caused by mutations in the PRKAR1A gene, which affects the cAMP signaling pathway. This leads to the development of multiple benign tumors in various tissues, including meningiomas, neuroendocrine tumors, and chondromas. The hyperpigmented skin lesions, also known as macules, are a distinctive feature of Carney complex.

**Why Each Wrong Option is Incorrect:**

A. Neurofibromatosis (Von Recklinghausen disease) is characterized by the development of multiple neurofibromas (benign nerve sheath tumors) and café-au-lait spots. It does not involve meningiomas and acoustic neuromas.

B. Gorham-Stout syndrome (GSS) is a rare disorder characterized by the involuntary disappearance of bone and soft tissue, often leading to skeletal deformities. It is unrelated to meningiomas, acoustic neuromas, and hyperpigmented skin lesions.

D. Multiple endocrine neoplasia (MEN) is a group of inherited disorders characterized by the development of multiple endocrine tumors. It does not involve meningiomas and acoustic neuromas.

**Clinical Pearl:**

Carney complex is a rare but clinically significant entity that should be considered in patients presenting with multiple benign tumors and distinctive skin lesions. Early diagnosis and surveillance are crucial to prevent potential complications and guide appropriate management strategies.