A 6-year-old child complains of bilateral thigh pain, motor weakness, and some sensory deficits of both lower limbs; he has a history of bladder dysfunction over the past 2 weeks; MRI of the spinal cord shows a mass arising from the filum terminale and conus medullaris causing some pressure effect. A CNS tumor is suspected. Which of the following tumor is MOST likely arising in such site?
- A. medulloblastoma
- B. anaplastic astrocytoma
- C. myxopapillary ependymoma
- D. choroid plexus carcinoma
Correct Answer: C
Rationale: Failed to generate a rationale of 500+ characters after 5 retries.
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In severe form of Tetralogy of Fallot, all are true Except:
- A. Marked cardiomegaly in chest X-ray
- B. Central cyanosis and clubbing
- C. Basal Ejection systolic murmur and single 2nd heart sound
- D. Right ventricular hypertrophy on ECG
Correct Answer: A
Rationale: Failed to generate a rationale of 500+ characters after 5 retries.
Which factor will not promote play and playfulness in children?
- A. Novel toys
- B. Familiar peers
- C. Comfortable atmosphere
- D. Directive adults
Correct Answer: D
Rationale: Directive adults can inhibit spontaneous play and creativity, which are essential for fostering playfulness in children. When adults are too directive, children may feel constrained and less likely to engage in imaginative and free play. Encouraging independence and allowing children to explore and create their play scenarios can enhance playfulness and creativity.
A classic example of type III (immune complex) reactions is
- A. serum sickness
- B. TB skin test reactions
- C. contact dermatitis (neomycin)
- D. graft versus-host disease
Correct Answer: A
Rationale: Failed to generate a rationale of 500+ characters after 5 retries.
One of the following causes normal anion gap metabolic acidosis:
- A. Diabetic ketoacidosis
- B. Renal tubular acidosis
- C. Lactic acidosis
- D. Salicylate poisoning
Correct Answer: B
Rationale: Failed to generate a rationale of 500+ characters after 5 retries.
Centers for Disease Control and Prevention (CDC) recommend the blood lead level that may cause learning problems is
- A. 1 to 5¼g/dL
- B. 5 to 10 μg/dL
- C. 10 to 15¼g/dL
- D. 15 to 20¼g/dL
Correct Answer: B
Rationale: Failed to generate a rationale of 500+ characters after 5 retries.