**Core Concept**
Bronchogenic carcinoma, a type of lung cancer, often metastasizes to distant organs, including endocrine glands. This phenomenon is a result of the tumor's ability to invade and spread through the bloodstream or lymphatic system.

**Why the Correct Answer is Right**
The adrenal glands are a common site for metastasis from bronchogenic carcinoma due to their rich blood supply and venous drainage. The tumor cells can spread to the adrenal glands via the inferior vena cava, which receives blood from the lower body, including the lungs. The adrenal glands' high metabolic rate and rapid cell turnover may also contribute to their susceptibility to metastasis. Additionally, the adrenal glands' proximity to the diaphragm, which is a common site for lung cancer metastasis, may increase the risk of adrenal involvement.

**Why Each Wrong Option is Incorrect**
**Option A:** Ovaries are not a common site for metastasis from bronchogenic carcinoma. While ovarian metastases can occur, they are relatively rare and more often associated with gastrointestinal or breast cancers.

**Option B:** Testes are not typically involved in metastasis from bronchogenic carcinoma. Testicular metastases are rare and usually seen in the context of hematogenous spread from other primary sites, such as the prostate or lung.

**Option C:** Thyroid metastases from bronchogenic carcinoma are extremely rare. While thyroid cancer can metastasize to the lungs, the reverse is not commonly seen.

**Clinical Pearl / High-Yield Fact**
It's essential to remember that the adrenal glands are a common site for metastasis from various primary cancers, including lung, breast, and melanoma. This knowledge can help you approach cases of adrenal masses or nodules in the context of a known primary malignancy.

**✓ Correct Answer: D. Adrenals**