A pt. has a pituitary tumour and pheochromocytoma and a thyroid nodule. Which Ca is most likely to occur -
Follicular Ca
Medullary Ca
Papillary Ca
Anaplastic Ca
This pt. is suffering from MEN Syndrome.
MEN (Multiple endocrine neoplasias) or MEA (Multiple endocrine adenomatosis) syndromes are characterized by the familial occurrence of multiple endocrine neoplasms.
3 types of MEN Syndrome are recognized.

a) MEN I (or Wermer's Syndrome*) consists of -

Pituitary adenoma (or hyperplasia)*
Parathyroid adenoma (or hyperplasia)*
Pancreatic islet cell hyperplasia, adenoma or carcinoma 

Other less common manifestations :

foregut carcinoids
pheochromocytoma
subcutaneous or visceral lipomas

b) MEN HA ( or Sipple syndrome)

Medullary carcinoma of thyroid (MCT)*
Pheochromocytoma*
Parathyroid adenoma (or hyperplasia)*
Hirschsprung disease*
Cutaneous lichen amyloidosis*


c) MEN H B

Medullary carcinoma of thyroid (MCT)*
Pheochromocytoma *
Marfanoid features*
Mucocutaneous and gastrointestinal neuromas*
Thus this pt. is suffering from MEN II A or II B syndrome (Pituitary tumor in this pt. is still confusing the question, but still; answer is definitely MCT).