ABSITE Questions and Correct Answers/ Latest Update / Already Graded

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ABSITE Questions and Correct Answers/ Latest Update / Already Graded

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Which nutrient is poorly absorbed in achlorhydria? a.) Vitamin D b.) Vitamin B12 c.) Bile salts d.) Proteins e.) Fats Ans: (b) Vitamin B12 Hypophosphatemia has been associated with all of the following EXCEPT: a.) impaired diaphragmatic contractility b.) treated diabetic ketoacidosis c.) malabsorption coupled with carbohydrate refeeding d.) chronic alcoholism All rights reserved © 2025/ 2026 | Page | 2 All rights reserved © 2025/ 2026 | e.) respiratory muscle hyperresponsiveness Ans: (e) It is seen in patients with chronic alcoholism, diabetic ketoacidosis, sepsis, and severe malnutrition after carbohydrate refeeding. It can also be seen in surgical patients who are not receiving enough phosphate repletion from parenteral nutrition. Hypophosphatemia causes muscle weakness, and probably affects the diaphragm more than other muscles, therefore leading to respiratory failure. Studies have shown lower contractility of the diaphragm Phosphorus deficiency may lead to insulin resistance as well What is the main nutrient for colonocytes? a.) Glutamine b.) Alanine c.) Short chain fatty acids d.) Glucose Ans: (c) Short chain fatty acids Page | 3 (Note: the primary fuel source though for enterocytes is glutamine) What chemotherapy agent leads to pulmonary fibrosis? a.) Doxorubicin b.) Methotrexate c.) Bleomycin d.) Vincristine e.) Cyclophosphamide Ans: (c) What is the most useful serum marker for cancer screening? a.) PSA b.) CEA c.) AFP d.) CA 19-9 e.) CA 15-3 Ans: (a) All rights reserved © 2025/ 2026 | Page | 4 All others are used for follow-up or diagnosis What is the embryologic origin of the inferior parathyroid gland? a.) 4th arch b.) 4th pouch c.) 3rd arch d.) 3rd pouch Ans: (d) Derivatives of the 3rd pouch in

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ABSITE Questions and Correct Answers/
Latest Update / Already Graded
The most common type of choledochal cyst

Ans: Type 1-cystic, fusiform or saccular dilation of CBD
CBD is abnormal, CHD is normal
TX with RenY hepaticojejeuenostomy with end to side
anastamosis

Origin of replaced right hepatic artery

Ans: SMA

Type 5 choledochal cyst

Ans: Caroli's disease-intrahepatic ducts, lobectomy vs.
transplant for tx

Common bile duct size

Ans: 6mm is normal, +1 for every 10 years over 40, 10mm can
be normal in elderly people

Mirizzi's sydrome

All rights reserved © 2025/ 2026 |

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Ans: compression of bile ducts by distended GB or gallstone

MC bugs in cholangitis

Ans: E coli, klebsiella, Enterococcus

Pancreatitis severity prediction

Ans: APACHE-II

Ranson's criteria

Ans: Pancreatitis (prognosis), more appropriate for ETOH
pancreatitis

Gallstone ileus

Ans: Intestinal obstruction, pneumobilia, calcified stone
distant from GB

Gallstone ileus tx

Ans: Enterotomy proximal to stone, extract stone, close
enterotomy. +/- SBR, +/- chole and fistula closure if stable

All rights reserved © 2025/ 2026 |

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Gallbladder polyps

Ans: >1cm is cancer until proven otherwise. Any size is cancer
until proven otherwise in the setting of PS C

Gallbladder cancer

Ans: DO NOT biopsy as you can seed the tract

Klatskin tumor

Ans: cholangiocarcinoma located at the hepatic hilum, @
junction of R. & L. hepatic ducts, intrahepatic dilation. TX with
resection and RenY bilioenteric reconstruction

Cholangiocarcinoma

Ans: Bili often >10 with average of 18, MRCP is imaging of
choice

Cholecystectomy, post-op bile leak

Ans: HIDA to dx, ERCP with stent to tx. Perc drainage if large
or uncontained

Strasberg classification

All rights reserved © 2025/ 2026 |

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Ans: For bile leak, A-D
E is for CHD stricture/transection

Bismuth classification

Ans: Classifies CHD injuries

Middle hepatic vein

Ans: Drains to LHV 80%, IVC 20%

Replaced left hepatic artery

Ans: Branches off left gastric

Liver imaging

Ans: Intra-op US is most sensitive for hepatic anatomy and
liver tumors. MRI can differentiate benign from malignant
tumors

Echinococcal (hydatid) cysts

Ans: Albendazole (surgery can lead to anaphylaxis)

All rights reserved © 2025/ 2026 |

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Uploaded on: December 4, 2025
Number of pages: 84
Written in: 2025/2026
Type: Exam (elaborations)
Contains: Questions & answers

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