Q- A 27-year-old woman presents with a painless thyroid nodule. Biopsy shows tumor cells forming follicles but without the nuclear features of papillary carcinoma. Capsular invasion is present.
What is the most likely diagnosis?
A- Anaplastic thyroid carcinoma
B- Follicular thyroid carcinoma
C- Medullary thyroid carcinoma
D- Papillary thyroid carcinoma
Q- A 50-year-old man presents with progressive muscle weakness and fatigue. Imaging reveals a mediastinal mass.
Which autoimmune disease is most commonly associated with this tumor?
A- Multiple sclerosis
B- Myasthenia gravis
C- Rheumatoid arthritis
D- Systemic lupus erythematosus
Q- A 65-year-old woman presents with progressive back pain. X-ray shows vertebral compression fractures. Bone biopsy reveals reduced bone mass with normal mineralization.
What is the most likely diagnosis?
A- Osteoporosis
B- Osteomalacia
C- Hyperparathyroidism
D- Paget’s disease
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