the year in review series: case 2. anemia case-based nbme...
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The Year in Review Series: Case 2. AnemiaCase-based NBME review
Howard J. Sachs, MDwww.12DaysinMarch.com
E-mail: [email protected]
![Page 2: The Year in Review Series: Case 2. Anemia Case-based NBME ...12daysinmarch.com/wp-content/uploads/2018/04/Yr-in... · Case-based NBME review. Patient is referred for video capsule](https://reader031.vdocuments.mx/reader031/viewer/2022022017/5b8283757f8b9ae47b8ea9f7/html5/thumbnails/2.jpg)
Howard J. Sachs, MDwww.12DaysinMarch.com
E-mail: [email protected]
Tutorial Services
The Year in Review Series: Case 2. AnemiaCase-based NBME review
![Page 3: The Year in Review Series: Case 2. Anemia Case-based NBME ...12daysinmarch.com/wp-content/uploads/2018/04/Yr-in... · Case-based NBME review. Patient is referred for video capsule](https://reader031.vdocuments.mx/reader031/viewer/2022022017/5b8283757f8b9ae47b8ea9f7/html5/thumbnails/3.jpg)
Patient is referred for video capsule endoscopy. Aphthae are observed. Which of the following was the most likely indication for the study?
1. HCT 30%, MCV 72, low iron, low iron binding capacity2. HCT 30%, MCV 105, low B-12, (+) intrinsic factor antibodies3. HCT 30%, MCV 72, low iron, high iron binding capacity4. HCT 30%, MCV 82, elevated indirect bilirubin
![Page 4: The Year in Review Series: Case 2. Anemia Case-based NBME ...12daysinmarch.com/wp-content/uploads/2018/04/Yr-in... · Case-based NBME review. Patient is referred for video capsule](https://reader031.vdocuments.mx/reader031/viewer/2022022017/5b8283757f8b9ae47b8ea9f7/html5/thumbnails/4.jpg)
A biopsy is taken in the region of the aphthous lesion. Which of the following is most likely to be described?
1. Crypt abscess with neutrophilic infiltrate2. Granulomatous infiltrate with transmural inflammation3. Thin walled vessel lined by epithelium and little smooth muscle4. Poorly differentiated cells with few glands5. Tubular adenoma with evidence of DNA mismatch repair
![Page 5: The Year in Review Series: Case 2. Anemia Case-based NBME ...12daysinmarch.com/wp-content/uploads/2018/04/Yr-in... · Case-based NBME review. Patient is referred for video capsule](https://reader031.vdocuments.mx/reader031/viewer/2022022017/5b8283757f8b9ae47b8ea9f7/html5/thumbnails/5.jpg)
The biopsy reveals the presence of granulomas. Which of the following epiphenomenon is the patient most likely to experience?
Cecal cancer with early APC mutation
Cholangiogram
A B C D
![Page 6: The Year in Review Series: Case 2. Anemia Case-based NBME ...12daysinmarch.com/wp-content/uploads/2018/04/Yr-in... · Case-based NBME review. Patient is referred for video capsule](https://reader031.vdocuments.mx/reader031/viewer/2022022017/5b8283757f8b9ae47b8ea9f7/html5/thumbnails/6.jpg)
Patient is referred for video capsule endoscopy. Aphthae are observed. Which of the following was the most likely indication for the study?
Video Capsule Endoscopy, Indication:GI blood loss of unclear origin
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Patient is referred for video capsule endoscopy. Aphthae are observed. Which of the following was the most likely indication for the study?
Case 2: Another instance where you don’t need the graphic to answer the question
![Page 8: The Year in Review Series: Case 2. Anemia Case-based NBME ...12daysinmarch.com/wp-content/uploads/2018/04/Yr-in... · Case-based NBME review. Patient is referred for video capsule](https://reader031.vdocuments.mx/reader031/viewer/2022022017/5b8283757f8b9ae47b8ea9f7/html5/thumbnails/8.jpg)
Patient is referred for video capsule endoscopy. Aphthae are observed. Which of the following was the most likely indication for the study?
So which of the choices are consistent with GI blood loss?
1. HCT 30%, MCV 72, low iron, low iron binding capacity2. HCT 30%, MCV 105, low B-12, (+) intrinsic factor antibodies3. HCT 30%, MCV 72, low iron, high iron binding capacity4. HCT 30%, MCV 82, elevated indirect bilirubin
![Page 9: The Year in Review Series: Case 2. Anemia Case-based NBME ...12daysinmarch.com/wp-content/uploads/2018/04/Yr-in... · Case-based NBME review. Patient is referred for video capsule](https://reader031.vdocuments.mx/reader031/viewer/2022022017/5b8283757f8b9ae47b8ea9f7/html5/thumbnails/9.jpg)
Patient is referred for video capsule endoscopy. Aphthae are observed. Which of the following was the most likely indication for the study?
So which of the choices are consistent with GI blood loss?
1. HCT 30%, MCV 72, low iron, low iron binding capacity2. HCT 30%, MCV 105, low B-12, (+) intrinsic factor antibodies3. HCT 30%, MCV 72, low iron, high iron binding capacity4. HCT 30%, MCV 82, elevated indirect bilirubin
Low MCV (Microcytosis):Iron deficiency anemia
Anemia of chronic diseaseThalassemia
(Sideroblastic anemia)
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Low MCV (Microcytosis):Iron deficiency anemia
Anemia of chronic diseaseThalassemia
(Sideroblastic anemia)
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Patient is referred for video capsule endoscopy. Aphthae are observed. Which of the following was the most likely indication for the study?
So which of the choices are consistent with GI blood loss?
1. HCT 30%, MCV 72, low iron, low iron binding capacity2. HCT 30%, MCV 105, low B-12, (+) intrinsic factor antibodies3. HCT 30%, MCV 72, low iron, high iron binding capacity4. HCT 30%, MCV 82, elevated indirect bilirubin
IDA:Iron loss (GI/GYN)
Nutrition/Absorption (e.g. Celiac disease)
ACD:IL-6 release (↑ Hepcidin; ↓ EPO)
![Page 12: The Year in Review Series: Case 2. Anemia Case-based NBME ...12daysinmarch.com/wp-content/uploads/2018/04/Yr-in... · Case-based NBME review. Patient is referred for video capsule](https://reader031.vdocuments.mx/reader031/viewer/2022022017/5b8283757f8b9ae47b8ea9f7/html5/thumbnails/12.jpg)
Patient is referred for video capsule endoscopy. Aphthae are observed. Which of the following was the most likely indication for the study?
So which of the choices are consistent with GI blood loss?
1. HCT 30%, MCV 72, low iron, low iron binding capacity2. HCT 30%, MCV 105, low B-12, (+) intrinsic factor antibodies3. HCT 30%, MCV 72, low iron, high iron binding capacity4. HCT 30%, MCV 82, elevated indirect bilirubin
![Page 13: The Year in Review Series: Case 2. Anemia Case-based NBME ...12daysinmarch.com/wp-content/uploads/2018/04/Yr-in... · Case-based NBME review. Patient is referred for video capsule](https://reader031.vdocuments.mx/reader031/viewer/2022022017/5b8283757f8b9ae47b8ea9f7/html5/thumbnails/13.jpg)
Patient is referred for video capsule endoscopy. Aphthae are observed. Which of the following was the most likely indication for the study?
So which of the choices are consistent with GI blood loss?
1. HCT 30%, MCV 72, low iron, low iron binding capacity2. HCT 30%, MCV 105, low B-12, (+) intrinsic factor antibodies3. HCT 30%, MCV 72, low iron, high iron binding capacity4. HCT 30%, MCV 82, elevated indirect bilirubin
Macrocytic Anemia 2° to Autoimmune Gastritis
![Page 14: The Year in Review Series: Case 2. Anemia Case-based NBME ...12daysinmarch.com/wp-content/uploads/2018/04/Yr-in... · Case-based NBME review. Patient is referred for video capsule](https://reader031.vdocuments.mx/reader031/viewer/2022022017/5b8283757f8b9ae47b8ea9f7/html5/thumbnails/14.jpg)
Patient is referred for video capsule endoscopy. Aphthae are observed. Which of the following was the most likely indication for the study?
So which of the choices are consistent with GI blood loss?
1. HCT 30%, MCV 72, low iron, low iron binding capacity2. HCT 30%, MCV 105, low B-12, (+) intrinsic factor antibodies3. HCT 30%, MCV 72, low iron, high iron binding capacity4. HCT 30%, MCV 82, elevated indirect bilirubin
Macrocytic Anemia 2° to Autoimmune Gastritis
Type II Hypersensitivity ReactionComplication: Gastric Carcinoma 2° ↑ Gastrin
![Page 15: The Year in Review Series: Case 2. Anemia Case-based NBME ...12daysinmarch.com/wp-content/uploads/2018/04/Yr-in... · Case-based NBME review. Patient is referred for video capsule](https://reader031.vdocuments.mx/reader031/viewer/2022022017/5b8283757f8b9ae47b8ea9f7/html5/thumbnails/15.jpg)
Patient is referred for video capsule endoscopy. Aphthae are observed. Which of the following was the most likely indication for the study?
So which of the choices are consistent with GI blood loss?
1. HCT 30%, MCV 72, low iron, low iron binding capacity2. HCT 30%, MCV 105, low B-12, (+) intrinsic factor antibodies3. HCT 30%, MCV 72, low iron, high iron binding capacity4. HCT 30%, MCV 82, elevated indirect bilirubin
Normocytic anemia with elevated unconjugated bilirubin = hemolysis
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Patient is referred for video capsule endoscopy. Aphthae are observed. Which of the following was the most likely indication for the study?
So which of the choices are consistent with GI blood loss?
1. HCT 30%, MCV 72, low iron, low iron binding capacity2. HCT 30%, MCV 105, low B-12, (+) intrinsic factor antibodies3. HCT 30%, MCV 72, low iron, high iron binding capacity4. HCT 30%, MCV 82, elevated indirect bilirubin
Iron Deficiency Anemia (IDA)
![Page 17: The Year in Review Series: Case 2. Anemia Case-based NBME ...12daysinmarch.com/wp-content/uploads/2018/04/Yr-in... · Case-based NBME review. Patient is referred for video capsule](https://reader031.vdocuments.mx/reader031/viewer/2022022017/5b8283757f8b9ae47b8ea9f7/html5/thumbnails/17.jpg)
A biopsy is taken in the region of the aphthous lesion. Which of the following is most likely to be described?
1. Crypt abscess with neutrophilic infiltrate2. Granulomatous infiltrate with transmural inflammation3. Thin walled vessel lined by epithelium and little smooth muscle4. Poorly differentiated cells with few glands5. Tubular adenoma with evidence of DNA mismatch repair
![Page 18: The Year in Review Series: Case 2. Anemia Case-based NBME ...12daysinmarch.com/wp-content/uploads/2018/04/Yr-in... · Case-based NBME review. Patient is referred for video capsule](https://reader031.vdocuments.mx/reader031/viewer/2022022017/5b8283757f8b9ae47b8ea9f7/html5/thumbnails/18.jpg)
A biopsy is taken in the region of the aphthous lesion. Which of the following is most likely to be described?
1. Crypt abscess with neutrophilic infiltrate2. Granulomatous infiltrate with transmural inflammation3. Thin walled vessel lined by epithelium and little smooth muscle4. Poorly differentiated cells with few glands5. Tubular adenoma with evidence of DNA mismatch repair
Ulcerative (Neutrophilic) Colitis:Continuous involvement from anorectal region
“Colitis” – doesn’t involve small bowelNot associated with aphthae (macroscopic: pseudopolyps)
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A biopsy is taken in the region of the aphthous lesion. Which of the following is most likely to be described?
Ulcerative (Neutrophilic) Colitis:Continuous involvement from anorectal region
“Colitis” – doesn’t involve small bowelNot associated with aphthae (macroscopic: pseudopolyps)
ừ-polyp
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A biopsy is taken in the region of the aphthous lesion. Which of the following is most likely to be described?
1. Crypt abscess with neutrophilic infiltrate2. Granulomatous infiltrate with transmural inflammation3. Thin walled vessel lined by epithelium and little smooth muscle4. Poorly differentiated cells with few glands5. Tubular adenoma with evidence of DNA mismatch repairAngiodysplasia (AVM)
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A biopsy is taken in the region of the aphthous lesion. Which of the following is most likely to be described?
1. Crypt abscess with neutrophilic infiltrate2. Granulomatous infiltrate with transmural inflammation3. Thin walled vessel lined by epithelium and little smooth muscle4. Poorly differentiated cells with few glands5. Tubular adenoma with evidence of DNA mismatch repair
The vascular channels may be separated from the intestinal lumen only by the vascular wall and a layer of attenuated epithelial cells.
Minor injury ® significant bleeding.
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A biopsy is taken in the region of the aphthous lesion. Which of the following is most likely to be described?
1. Crypt abscess with neutrophilic infiltrate2. Granulomatous infiltrate with transmural inflammation3. Thin walled vessel lined by epithelium and little smooth muscle4. Poorly differentiated cells with few glands5. Tubular adenoma with evidence of DNA mismatch repair
Familial adenomatous polyposis: a/w APC mutation (Adenomatous Polyposis Coli)
100’s of adenomas and colon cancer at young age
Lynch Syndrome (hereditary non-polyposis): DNA mismatch repair (MMR) a/w microsatellite instability. Right sided CRC, young age
(a/w endometrial cancer)
Adenocarcinoma
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A biopsy is taken in the region of the aphthous lesion. Which of the following is most likely to be described?
1. Crypt abscess with neutrophilic infiltrate2. Granulomatous infiltrate with transmural inflammation3. Thin walled vessel lined by epithelium and little smooth muscle4. Poorly differentiated cells with few glands5. Tubular adenoma with evidence of DNA mismatch repair
Crohn’s (Granulomatous) ColitisTerminal ileum > ileocolonic > colonic
Aphthae: earliest lesion → progress, coalesceSkip Lesions
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A biopsy is taken in the region of the aphthous lesion. Which of the following is most likely to be described?
Crohn’s (Granulomatous) ColitisTerminal ileum > ileocolonic > colonic
Aphthae: earliest lesion → progress, coalesceSkip Lesions
Know the cells and cytokines involved in granuloma formation
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The biopsy reveals the presence of granulomas. Which of the following epiphenomenon is the patient most likely to experience?
Cecal cancer with early APC mutation
Cholangiogram
A B C D
Fusion of SI joint c/w sacroiliitis
![Page 26: The Year in Review Series: Case 2. Anemia Case-based NBME ...12daysinmarch.com/wp-content/uploads/2018/04/Yr-in... · Case-based NBME review. Patient is referred for video capsule](https://reader031.vdocuments.mx/reader031/viewer/2022022017/5b8283757f8b9ae47b8ea9f7/html5/thumbnails/26.jpg)
The biopsy reveals the presence of granulomas. Which of the following epiphenomenon is the patient most likely to experience?
Cecal cancer with early APC mutation
Cholangiogram
A B C D
Fusion of SI joint c/w sacroiliitis
Step 1. Needed to identify this patient has Crohn’sStep 2a. Crohn’s has many complications (esp fistulae)
Step 2b. Crohn’s has many extraintestinal manifestations
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The biopsy reveals the presence of granulomas. Which of the following epiphenomenon is the patient most likely to experience?
Cecal cancer with early APC mutation
Cholangiogram
A B C D
Fusion of SI joint c/w sacroiliitis
Step 1. Needed to identify this patient has Crohn’sStep 2a. Crohn’s has many complications (esp fistulae)
Step 2b. Crohn’s has many extraintestinal manifestations
Anal
CutaneousEntero-Visceral
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The biopsy reveals the presence of granulomas. Which of the following epiphenomenon is the patient most likely to experience?
Cecal cancer with early APC mutation
Cholangiogram
A B C D
Fusion of SI joint c/w sacroiliitis
Step 1. Needed to identify this patient has Crohn’sStep 2a. Crohn’s has many complications (esp fistulae)
Step 2b. Crohn’s has many extraintestinal manifestations
This question is asking about both complication and extraintestinal manifestations.
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The biopsy reveals the presence of granulomas. Which of the following epiphenomenon is the patient most likely to experience?
Cecal cancer with early APC mutation
Cholangiogram
A B C D
Fusion of SI joint c/w sacroiliitis
Very dilated colonImplication: Toxic Megacolon (clinical diagnosis)
Associated with UC
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The biopsy reveals the presence of granulomas. Which of the following epiphenomenon is the patient most likely to experience?
Cecal cancer with early APC mutation
C
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Cecal cancer with early APC mutation
Adenoma-Carcinoma Sequence
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CRC complicating UC (Pancolitis):Early p53, late APC
Young age, Multifocal, Proximal
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The biopsy reveals the presence of granulomas. Which of the following epiphenomenon is the patient most likely to experience?
IBD question with cholangiogram = PSC
D
Sclerosing CholangitisIntra/Extrahepatic beading
Onion skin fibrosisComplication of UC
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The biopsy reveals the presence of granulomas. Which of the following epiphenomenon is the patient most likely to experience?
D
Sclerosing CholangitisIntra/Extrahepatic beading
Onion skin fibrosisComplication of UC
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The biopsy reveals the presence of granulomas. Which of the following epiphenomenon is the patient most likely to experience?
Sporadic CRC
Cholangiogram
A B C D
Fusion of SI joint c/w sacroiliitis
Toxic Megacolon, UC PSC, UC
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The biopsy reveals the presence of granulomas. Which of the following epiphenomenon is the patient most likely to experience?
B
MSK Extraintestinal Manifestation: Fusion of SI joint c/w sacroiliitis
Inflammatory LBP1. Indolent2. Persistent3. Worse in AM4. Better with activity5. Young male
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SteatorrheaFat soluble vitamin deficiencies
Renal stones (↑ oxalate absorption)
SkinErythema nodusum
Enterocutaneous fistulae
Loss of Terminal IleumB-12 deficiency
Gall stones (↓ enterohepatic circulation)
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The Year in Review Series: Case 2. AnemiaCase-based NBME review
Howard J. Sachs, MDwww.12DaysinMarch.com
E-mail: [email protected]