Final answer:
The pituitary syndrome associated with small-cell lung carcinoma is ectopic adrenocorticotropic hormone (ACTH) syndrome. This syndrome results in an overproduction of cortisol in the body, leading to various symptoms.
Step-by-step explanation:
The pituitary syndrome associated with small-cell lung carcinoma is ectopic adrenocorticotropic hormone (ACTH) syndrome. Small-cell lung carcinoma is known to produce ectopic hormones, including ACTH, which can lead to an overproduction of cortisol in the body. This can result in symptoms such as weight gain, high blood pressure, and muscle weakness.