Constellation of aniridia and hemihypertrophy is strongly associated with increased risk of which of the following tumors?

Correct Answer: C

Rationale: Aniridia and hemihypertrophy are features of WAGR syndrome, which increases the risk of Wilms tumor.

Correct Answer: A

Rationale: In the scenario described, the baby is born with temporary immunity to diseases that the mother is immune to. This is an example of naturally acquired passive immunity, where the baby receives preformed antibodies from the mother, providing immediate protection against certain diseases. This type of immunity is passive because the baby did not produce the antibodies themselves, and it is naturally acquired as it occurs through the transfer of antibodies from the mother to the baby during pregnancy.

Correct Answer: B

Rationale: Slow-wave sleep is primarily restorative, not protective against brain injury.

Correct Answer: A

Rationale: The patient's symptoms of tingling in the fingers, positive Trousseau's and Chvostek's signs, and feeling depressed are suggestive of hypocalcemia, which is commonly associated with low serum calcium levels. In this case, the most likely serum calcium value would be below the normal range, which is around 8.5-10.5 mg/dl. Among the given choices, an extremely low calcium value of 5mg/dl (Choice D) would be more consistent with severe hypocalcemia presenting with tetany and other neuromuscular symptoms rather than depression and mild symptoms. On the other hand, a high calcium level of 11mg/dl (Choice A) would indicate hypercalcemia, which can lead to neuropsychiatric symptoms like depression, as seen in this patient's presentation. Therefore, Choice A (11mg/dl) is the most likely serum calcium value for

Correct Answer: D

Rationale: Children with ataxia-telangiectasia are highly sensitive to radiation and can suffer severe reactions to radiotherapy.