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Give me a very short 60-second review summary of Bernard-Soulier syndrome, including mostly the almost 100% of pathology topics, questions which can be asked for a clinical PG 2026 MCQ.

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Now I have rich, authoritative textbook data. Here is the high-yield 60-second PG 2026 MCQ review:

Bernard-Soulier Syndrome โ€” High-Yield 60-Second Review ๐Ÿฉธ

Core Identity

  • Autosomal recessive disorder (most common form; a milder monoallelic/heterozygous form also exists)
  • Deficiency/dysfunction of GPIb/IX/V complex (mutations in GPIBA, GPIBB, GP9 genes)
  • GPIb/IX/V is the receptor for von Willebrand factor (vWF) โ†’ failure of platelet adhesion to subendothelium

The High-Yield Triad (MCQ anchor)

FeatureDetail
MacrothrombocytopeniaGiant platelets + low platelet count
Prolonged bleeding timeWith near-normal coagulation tests
Mucocutaneous bleedingPetechiae, purpura, epistaxis, menorrhagia

Lab Hallmarks โ€” Most Tested

TestResult
Platelet countโ†“ (thrombocytopenia)
Platelet sizeGiant/large platelets on smear
Bleeding time / PFA-100Prolonged
PT/aPTTNormal
Ristocetin aggregationABSENT / markedly reduced โœ…
ADP, collagen, arachidonic acid, epinephrine aggregationNormal
Clot retractionNormal
Flow cytometryAbsent GPIb on platelet surface
Key MCQ trap: Ristocetin is also abnormal in vWD. The differentiator โ€” in vWF disease, adding exogenous vWF corrects the aggregation; in BSS it does NOT (the receptor itself is absent).

Pathophysiology in One Line

GPIb/IX/V binds vWF (especially under high shear) โ†’ its absence = no platelet adhesion (not aggregation) โ†’ bleeding at mucosal surfaces.

Compared with Glanzmann Thrombasthenia (Classic Pair MCQ)

FeatureBernard-SoulierGlanzmann
Deficient proteinGPIb/IX/VGPIIb/IIIa
MechanismAdhesion defectAggregation defect
Platelet sizeGiantNormal
Platelet countโ†“Normal
RistocetinAbsentNormal
ADP/collagen aggregationNormalAbsent
Clot retractionNormalAbnormal

Associations & Additional MCQ Points

  • Giant platelets on peripheral smear โ†’ BSS vs. May-Hegglin anomaly (May-Hegglin has Dรถhle body-like inclusions in neutrophils)
  • Treatment: platelet transfusions for active bleeding; HLA-matched preferred to prevent alloimmunization; desmopressin (DDAVP) may have limited benefit
  • Genetic counseling: AR inheritance โ€” parents are carriers, 25% chance per child
  • Diagnosed by flow cytometry (GPIb absence) ยฑ genetic testing
  • Monoallelic form: large platelets, mildly low count, only detectable by flow cytometry or genetics

One-Line MCQ Summary

BSS = AR + Giant platelets + GPIb/IX/V absent + No ristocetin response + Normal ADP/collagen aggregation + Normal PT/aPTT + Mucocutaneous bleeding
โ€” Goldman-Cecil Medicine, Harrison's Principles of Internal Medicine 22E

Now give me a single Anki card with the front saying Bernard-Soulier syndrome and the back giving the 60-second summary. The summary should be well-spaced, proper headings, well-separation after each section, and it should be in text format that I can copy and paste to AnkiDroid app. Make sure I get only one card and not 100 cards when I import.

Here is your single Anki card in plain text format. AnkiDroid imports cards in tab-separated format (one line = one card). The front and back are separated by a tab, and the entire back is on one line using <br> tags for line breaks and basic HTML for formatting.
Copy everything between the triple backticks:
Bernard-Soulier Syndrome	<b>BERNARD-SOULIER SYNDROME โ€” HIGH-YIELD REVIEW</b><br><br><b>๐Ÿ”‘ CORE IDENTITY</b><br>โ€ข Autosomal recessive (AR)<br>โ€ข Deficiency/dysfunction of <b>GPIb/IX/V complex</b> (mutations: GPIBA, GPIBB, GP9)<br>โ€ข GPIb/IX/V = receptor for <b>vWF</b> โ†’ failure of <b>platelet ADHESION</b><br><br>โ”โ”โ”โ”โ”โ”โ”โ”โ”โ”โ”โ”โ”โ”โ”โ”โ”โ”โ”โ”โ”โ”<br><b>โš ๏ธ HIGH-YIELD TRIAD</b><br>1. <b>Macrothrombocytopenia</b> โ€” giant platelets + low count<br>2. <b>Prolonged bleeding time</b> โ€” with normal PT/aPTT<br>3. <b>Mucocutaneous bleeding</b> โ€” petechiae, epistaxis, menorrhagia<br><br>โ”โ”โ”โ”โ”โ”โ”โ”โ”โ”โ”โ”โ”โ”โ”โ”โ”โ”โ”โ”โ”โ”<br><b>๐Ÿงช LAB HALLMARKS</b><br>โ€ข Platelet count โ†’ โ†“<br>โ€ข Platelet size โ†’ <b>GIANT</b> on smear<br>โ€ข Bleeding time / PFA-100 โ†’ <b>Prolonged</b><br>โ€ข PT / aPTT โ†’ <b>Normal</b><br>โ€ข <b>Ristocetin aggregation โ†’ ABSENT</b><br>โ€ข ADP, collagen, epinephrine, arachidonic acid โ†’ <b>Normal</b><br>โ€ข Clot retraction โ†’ Normal<br>โ€ข Flow cytometry โ†’ <b>Absent GPIb on platelet surface</b><br><br>โ”โ”โ”โ”โ”โ”โ”โ”โ”โ”โ”โ”โ”โ”โ”โ”โ”โ”โ”โ”โ”โ”<br><b>๐Ÿชค MCQ TRAP โ€” BSS vs vWD</b><br>Both have absent ristocetin response.<br>Differentiator: Adding <b>exogenous vWF corrects</b> aggregation in vWD โ€” <b>does NOT correct in BSS</b> (receptor itself is absent).<br><br>โ”โ”โ”โ”โ”โ”โ”โ”โ”โ”โ”โ”โ”โ”โ”โ”โ”โ”โ”โ”โ”โ”<br><b>โš–๏ธ BSS vs GLANZMANN THROMBASTHENIA</b><br>โ€ข BSS โ†’ GPIb/IX/V deficient โ†’ Adhesion defect โ†’ Giant platelets โ†’ Low count โ†’ Ristocetin ABSENT โ†’ ADP/collagen Normal โ†’ Clot retraction Normal<br>โ€ข Glanzmann โ†’ GPIIb/IIIa deficient โ†’ Aggregation defect โ†’ Normal platelets โ†’ Normal count โ†’ Ristocetin Normal โ†’ ADP/collagen ABSENT โ†’ Clot retraction ABNORMAL<br><br>โ”โ”โ”โ”โ”โ”โ”โ”โ”โ”โ”โ”โ”โ”โ”โ”โ”โ”โ”โ”โ”โ”<br><b>๐Ÿ”— ASSOCIATIONS</b><br>โ€ข Giant platelets DDx: BSS vs <b>May-Hegglin anomaly</b> (May-Hegglin has Dรถhle-like inclusions in neutrophils)<br>โ€ข Monoallelic form: large platelets, mild โ†“count, diagnosed only by flow cytometry/genetics<br>โ€ข Dx: Flow cytometry (GPIb absent) ยฑ genetic testing<br><br>โ”โ”โ”โ”โ”โ”โ”โ”โ”โ”โ”โ”โ”โ”โ”โ”โ”โ”โ”โ”โ”โ”<br><b>๐Ÿ’Š TREATMENT</b><br>โ€ข Active bleeding โ†’ <b>Platelet transfusions</b> (HLA-matched preferred)<br>โ€ข DDAVP โ†’ limited benefit<br>โ€ข Genetic counseling: AR โ†’ 25% risk per child<br><br>โ”โ”โ”โ”โ”โ”โ”โ”โ”โ”โ”โ”โ”โ”โ”โ”โ”โ”โ”โ”โ”โ”<br><b>๐Ÿ“Œ ONE-LINE SUMMARY</b><br>AR + Giant platelets + GPIb/IX/V absent + No ristocetin response + Normal ADP/collagen + Normal PT/aPTT + Mucocutaneous bleeding
How to import into AnkiDroid:
  1. Save the above text as a .txt file (e.g., bss_card.txt)
  2. Open AnkiDroid โ†’ โ‹ฎ Menu โ†’ Import
  3. Select the file
  4. Make sure Field separator = Tab and Fields = 2
  5. Import โ€” you will get exactly 1 card
The key to one card only: the entire content is on one single line with no line breaks โ€” only <br> tags. AnkiDroid reads each line as one card, so one line = one card.

Also give ten very high yield monkey cards for Bernard-Soulier syndrome, covering only the pathology aspect.

Here are 10 high-yield monkey cards (one atomic fact per card) covering only the pathology of Bernard-Soulier syndrome. Copy everything between the triple backticks:
BSS โ€” Inheritance pattern?	<b>Autosomal Recessive (AR)</b><br><br>Monoallelic (heterozygous) form exists โ†’ milder, large platelets, mildly low count, only detectable by flow cytometry or genetics.
BSS โ€” Which glycoprotein complex is deficient/dysfunctional?	<b>GPIb/IX/V complex</b><br><br>Encoded by genes: <b>GPIBA, GPIBB, GP9</b>
BSS โ€” GPIb/IX/V normally binds which ligand to mediate platelet adhesion?	<b>von Willebrand Factor (vWF)</b><br><br>This interaction is critical under <b>high shear stress</b> at sites of vascular injury โ†’ BSS = defect of platelet <b>ADHESION</b> (not aggregation).
BSS โ€” What is the classic peripheral smear finding?	<b>Giant (macro) platelets + thrombocytopenia</b><br><br>= Macrothrombocytopenia<br>Platelet size can approach that of a red blood cell.
BSS โ€” What is the pathognomonic aggregation study finding?	<b>Absent/markedly reduced ristocetin-induced platelet aggregation</b><br><br>Ristocetin requires GPIb/IX/V to work โ†’ absent receptor = no aggregation with ristocetin.
BSS โ€” Which aggregation responses are NORMAL in BSS?	<b>ADP, collagen, epinephrine, arachidonic acid โ€” ALL NORMAL</b><br><br>Only ristocetin is absent. This distinguishes BSS from Glanzmann thrombasthenia (where ADP/collagen/epinephrine are absent).
BSS โ€” How do you differentiate BSS from vWD on aggregation studies?	<b>Add exogenous vWF:</b><br>โ€ข vWD โ†’ aggregation <b>corrects</b> (receptor is intact, ligand was missing)<br>โ€ข BSS โ†’ aggregation does <b>NOT correct</b> (receptor itself is absent)
BSS โ€” What do PT, aPTT, and clot retraction show in BSS?	<b>All NORMAL</b><br><br>PT โ†’ Normal<br>aPTT โ†’ Normal<br>Clot retraction โ†’ Normal<br>(BSS is a primary hemostasis / platelet plug defect โ€” coagulation cascade is intact)
BSS โ€” How is the definitive diagnosis confirmed?	<b>Flow cytometry</b> showing <b>absent GPIb on platelet surface</b><br><br>ยฑ Genetic testing (GPIBA, GPIBB, GP9 mutations)<br>Light transmission aggregometry (LTA) supports diagnosis.
BSS โ€” Giant platelets on smear: how to differentiate BSS from May-Hegglin anomaly?	<b>May-Hegglin anomaly</b> has giant platelets <b>AND</b> <b>Dรถhle body-like inclusions in neutrophils</b><br><br>BSS has giant platelets but <b>NO</b> neutrophil inclusions.<br>May-Hegglin is caused by <b>MYH9</b> gene mutation.
Import tip:
  • These 10 cards + the 1 summary card can all go in the same .txt file โ€” each line = one card
  • Import once โ†’ you get exactly 11 cards total in your deck
  • Separator = Tab, Fields = 2
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