Pg Blazer - NEET Pg Mini Mock Test 1 (USMLE Based)

10 Questions | By Pgblazer | Updated: Mar 20, 2022 | Attempts: 1610

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10 questions based on the USMLE pattern for NEET PG. Your score will be displayed at the end of the test with correct answers. For more online practice tests, go to PG Blazer Online Test Series

Questions and Answers

1.

A 52-year-old woman comes to the physician because of a 2-day history of fever and left flank pain. She has been treated for multiple episodes of pyelonephritis during the past 3 years. Her temperature is 37.8°C (100.1°F). Physical examination shows left flank tenderness. Urinalysis shows 12–18 WBC/hpf with occasional lymphocytes and mononuclear cells with features of macrophages. Cultures of urine grow 80,000 colonies/mL of Proteus mirabilis. An x-ray of the abdomen shows a 3-cm mass in the lower pole of the left kidney. Gross examination of the mass after it has been resected shows that it is yellow, 3.2-cm in diameter, and centrally but not marginally necrotic. Histologic examination of the mass shows a predominance of epithelioid cells with partially clear and granular-to-foamy cytoplasm. Nuclei are eccentric, normochromic, symmetric, and without significant pleomorphism. Scattered lymphocytes and plasma cells are intermixed. Which of the following is the most likely diagnosis?
- A.
  
  Acute pyelonephritis
- B.
  
  Malacoplakia
- C.
  
  Renal cell carcinoma, clear cell type,intermediate grade
- D.
  
  Renal cell carcinoma, granular cell type
- E.
  
  Xanthogranulomatous pyelonephritis
2.

A 25-year-old woman has a 3-day history of vomiting and diarrhea. She has postural hypotension and poor tissue turgor. Her serum sodium concentration is 130 mEq/L. Which of the following findings is most likely?
- A.
  
  Decreased serum aldosterone concentration
- B.
  
  Increased serum atrial natriuretic peptide concentration
- C.
  
  Increased effective circulating volume
- D.
  
  Increased serum ADH (vasopressin) concentration
- E.
  
  Urine osmolality less than serum osmolality
3.

A 50-year-old man with a history of alcoholism has difficulty with short-term memory. He is unable to recall the date and cannot remember what he ate for breakfast this morning. He thinks the examiner is a long-lost friend and carries on a conversation with the examiner as if they have known each other for years. His long-term memory appears intact. The patient dies shortly thereafter of a myocardial infarct. Pathologic examination of his brain is most likely to disclose an abnormality involving which of the following?
- A.
  
  Amygdala
- B.
  
  Caudate nucleus
- C.
  
  Hippocampus
- D.
  
  Locus caeruleus
- E.
  
  Mammillary bodies
4.

A 72-year-old man who is a retired construction worker comes to the physician because he has had a lesion on his face for 3 months. Physical examination shows a 6-mm, red, ulcerated lesion with heaped borders. A biopsy specimen of the lesion shows atypical, dysplastic keratinocytes within the epidermis and dermis. Which of the following is the most likely diagnosis?
- A.
  
  Actinic keratosis
- B.
  
  Discoid lupus erythematosus
- C.
  
  Melanoma
- D.
  
  Mycosis fungoides
- E.
  
  Squamous cell carcinoma
5.

A 1-day-old newborn is evaluated for possible sepsis. Blood cultures grow gram-positive cocci in pairs and chains that agglutinate with group B antiserum. The most likely epidemiologic risk factor for this infection involves bacterial colonization of which of the following?
- A.
  
  Mother’s vagina
- B.
  
  Newborn’s gastrointestinal tract
- C.
  
  Newborn’s nasopharynx
- D.
  
  Placenta
- E.
  
  Umbilical cord remnant
6.

A 21-year-old man is brought to the emergency department by friends because of blurred vision, headache, abdominal pain, nausea, and vomiting for 30 minutes. His friends say that he drank 60 mL of wood alcohol 1 hour ago after a bet at a fraternity house party. His pulse is 58/min and regular, respirations are 28/min and shallow, and blood pressure is 130/72 mm Hg. Physical examination shows no other abnormalities. Laboratory studies show: Serum Na+ – 139 mEq/L Cl− – 85 mEq/L K+ – 4.5 mEq/L HCO3− – 13 mEq/L Urine pH – 5 Crystals – none Arterial blood gas analysis on room air: pH – 7.28 PO2 – 108 mm Hg PCO2 – 22 mm Hg Which of the following is the most appropriate initial treatment for this patient?
- A.
  
  Intravenous ethanol therapy
- B.
  
  Intravenous sodium bicarbonate therapy
- C.
  
  Oral acetylcysteine therapy
- D.
  
  Oral activated charcoal therapy
- E.
  
  Hemodialysis
7.

A 42-year-old woman, gravida 2, para 2, comes for a routine examination. She has type 2 diabetes mellitus well controlled with glyburide. She has a history of vulvar condylomata acuminata successfully treated with laser ablation 12 years ago. She does not smoke. She drinks a six-pack of beer nightly. She is sexually active and uses a diaphragm with spermicide for contraception. Her mother had breast cancer at the age of 65 years. The patient is 157 cm (5 ft 2 in) tall and weighs 100 kg (220 lb); BMI is 40 kg/m2. Physical examination shows no other abnormalities. Pelvic examination shows a 2-cm ulcer on the cervix. A biopsy specimen of the cervical lesion shows invasive squamous cell carcinoma. Which of the following is the most significant predisposing factor for this patient’s cervical cancer?
- A.
  
  Alcohol use
- B.
  
  Diaphragm and spermicide use
- C.
  
  Heredity
- D.
  
  Human papillomavirus infection
- E.
  
  Obesity
- F.
  
  Parity
- G.
  
  Type 2 diabetes mellitus
8.

Three weeks after traveling to California to study desert flowers, a 32-year-old man develops a fever, chest pain, and sore muscles. Two days later, red tender nodules appear on the shins, and the right ankle is painful and tender. An x-ray of the chest shows a left pleural effusion. Which of the following is the most likely diagnosis?
- A.
  
  Blastomycosis
- B.
  
  Coccidioidomycosis
- C.
  
  Histoplasmosis
- D.
  
  Mycobacterium marinum infection
- E.
  
  Mycoplasma pneumoniae infection
9.

A 55-year-old man who has alcoholic cirrhosis is brought to the emergency department because he has been vomiting blood for 2 hours. He has a 2-month history of abdominal distention, dilated veins over the anterior abdominal wall, and internal hemorrhoids. Which of the following veins is the most likely origin of the hematemesis?
- A.
  
  Inferior mesenteric veins
- B.
  
  Left gastric vein
- C.
  
  Periumbilical veins
- D.
  
  Superior rectal vein
- E.
  
  Superior vena cava
10.

A patient being treated with clindamycin for aspiration pneumonia develops diarrhea. The stool contains a toxin that kills cultured epithelial cells. Stool culture grows an anaerobic gram-positive rod. The same organism is cultured from his bedpan. Which of the following is most likely to sterilize the bedpan?
- A.
  
  Boiling for 45 minutes
- B.
  
  Exposure to benzalkonium chloride for 1 hour
- C.
  
  Exposure to ethyl alcohol for 1 hour
- D.
  
  Exposure to saturated steam (121°C) for 15 minutes
- E.
  
  Heating in an oven at 150°C for 30 minutes