Repeated USMLE Questions Step 1- 377

Q- A 32-year old woman presents with burning micturition, frequency and pain in the suprapubic region. There is no fever, vaginal discharge or pruritus. She had no similar episodes and she is not taken any medications. Which of the following is the most likely causative organism of this condition?

A- Campylobacter

B- Escherichia coli

C- Staphylococcus aureus

D- Streptococcus viridans

B- Escherichia coli- This is most likely a case of uncomplicated lower urinary tract infection. 75%-95% of cases are caused by E Coli. A- Food poisoning C and D causes a lot of other infections but E Coli is the most common in UTI.

Q- A 15-year-old girl presents with potential growth delay. She had traumatic brain injury two years ago due to a car accident. Her secondary sex characteristics are absent. Endocrine profile shows low FSH, LH, estradiol, DTEAS and prolactin. What is the most likely diagnosis?

A- Hashimoto’s disease

B- Post-traumatic hypopituitarism

C- Primary adrenal insufficiency

D- Tanner syndrome

B- Post-traumatic hypopituitarism- This is most likely a case called empty sella syndrome due to traumatic injury to the brain. It is confirmed by MRI to the brain.

Q- A 70-year-old man with a history of paraplegia develops sudden pleuritic chest pain. A chest CT scan shows a hemorrhagic wedge-shaped pleural based area localized in the right lower lobe. Which of the following is the most likely cause of this lesion?

A- Atherosclerosis

B- Embolism

C- Inflammation

D- Thrombosis

B- Embolism- This is a typical case of pulmonary embolism due to less movement and sudden chest pain. It is confirmed by the CT scan.

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4 thoughts on “Repeated USMLE Questions Step 1- 377”

  1. Thank you so much for your nice words. I wish you the best in your medical journey.

  2. very educative stuff. keep it going

  3. Thank you. I hope you enjoy it.

  4. Educative

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