Medical Information

02/03/2026

🧠 Cranial Nerves (I–XII) :-

Cranial nerves are 12 paired nerves that arise directly from the brain and brainstem.
They control smell, vision, eye movements, facial sensation, hearing, swallowing, and tongue movements.

25/02/2026

🟡 **Removal of a Fascinating Cholesterol Gallstone!**
What does it resemble? 🥚

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🫀 **Gallbladder Anatomy**

The gallbladder is a small, pear-shaped organ located on the right side of the abdomen, just beneath the liver.

Its function:
• Stores bile
• Concentrates bile
• Releases bile into the small intestine for fat digestion

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🧪 **What Are Gallstones Made Of?**

Gallstones vary in:
• Shape
• Size
• Quantity
• Composition

They may contain different proportions of:
• Cholesterol
• Bile salts
• Lecithin
• Bilirubin

🟡 **Cholesterol stones account for > 85% of gallstones.**

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⚗️ **How Do Cholesterol Stones Form?**

For cholesterol stones to form:

✔ Bile must be supersaturated with cholesterol
✔ Nucleation must occur
✔ Crystals must grow and aggregate

Normally, cholesterol is water-insoluble.
It becomes soluble by combining with:

• Bile salts
• Lecithin

This forms **mixed micelles**.

When this balance is disrupted:

• Excess cholesterol secretion
• Decreased bile salts
• Decreased lecithin

➡ Cholesterol precipitates as microcrystals
➡ Crystals aggregate
➡ Stones form

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🎨 **Stone Appearance & Composition**

🟡 Yellow & soft → High cholesterol
⚫ Black → High bilirubin
⚪ Hard → More bile salt components

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⚠️ **What Happens When a Stone Blocks?**

🟠 **Cystic Duct Obstruction**

If a gallstone blocks the cystic duct:

• Bile cannot exit
• Gallbladder wall tension increases
• Pain occurs → **Biliary colic**

If obstruction persists > few hours:

➡ Acute cholecystitis (gallbladder inflammation)

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🔴 **Choledocholithiasis**

When a stone passes from:

Gallbladder → Cystic duct → Common bile duct

This is called **choledocholithiasis**.

It may lead to:

• Jaundice
• Cholangitis
• Pancreatitis

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🧠 **Clinical Insight**

Because stone migration determines symptoms, location matters more than size.

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💬 Engagement Question:

What does this cholesterol stone resemble to you? 🥚

Drop your answer below 👇

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16/02/2026

08/02/2026

Haemorrhoids

1. Definition

Haemorrhoids are swollen and inflamed veins in the a**l ca**l.
They can be:
• Internal haemorrhoids – above dentate line
• External haemorrhoids – below dentate line
• Thrombosed external haemorrhoids – painful clot inside an external haemorrhoid

2. Symptoms (Easy to Remember)

Internal
• Painless bright-red bleeding
• Mucus discharge
• Feeling of incomplete evacuation
• Prolapse (may reduce spontaneously or need manual reduction)

External
• Painful swelling at a**l verge
• Itching/irritation
• If thrombosed: sudden severe pain + bluish lump

3. Diagnosis

Mainly clinical (inspection + digital re**al exam + anoscopy).

Tests to rule out other causes of bleeding:
• CBC (if heavy bleeding)
• Colonoscopy for red flags (age >40, weight loss, anemia, family history of colore**al cancer)

4. Differential Diagnosis

Always think of other causes of re**al bleeding:
• A**l fissure (painful bleeding)
• Re**al prolapse
• Colore**al cancer
• Inflammatory bowel disease
• Diverticular bleeding
• Polyps
• Peria**l abscess

5. Treatment (Step-Wise & Easy)

A. Conservative (First-line)
• High-fiber diet + fiber supplements
• Plenty of water
• Avoid straining
• Sitz baths (warm water sitting)
• Topical treatments (hydrocortisone, lidocaine)
• Stool softeners

B. Office Procedures (If persistent symptoms)
• Rubber band ligation (best for internal)
• Sclerotherapy
• Infrared coagulation

C. Surgical (Severe/Grade IV or thrombosed external)
• Haemorrhoidectomy
• Stapled haemorrhoidopexy (for prolapsing internal haemorrhoids)
• For thrombosed external haemorrhoids: excision within 72 hours relieves pain quickly.

6. Follow-Up
• Reassess in 4–6 weeks after lifestyle and medical therapy
• After procedures, follow-up to check healing and recurrence
• Educate on long-term fiber intake to prevent recurrence
• Evaluate for other causes of bleeding if symptoms persist

14/11/2025

08/11/2025

🫁 Pulmonary Embolism: When Blood Stops and Air Runs Out

A pulmonary embolism happens when a blood clot blocks an artery in the lungs. This blockage prevents normal blood flow, making it hard for oxygen to reach the body — a silent and sudden threat that can become life-threatening in seconds.

05/10/2025

27/09/2025

04/09/2025

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04/09/2025

🫁 Acute Respiratory Distress Syndrome (ARDS) is a life-threatening condition where the lungs become severely inflamed and filled with fluid, leading to acute hypoxemic respiratory failure.

It usually develops within hours to days after a triggering illness or injury.

🫁Definition (Berlin Criteria)
• Acute onset: within 1 week of a known clinical insult
• Chest imaging: Bilateral opacities (not explained by effusion, collapse, or nodules)
• Origin of edema: Not fully explained by heart failure or fluid overload
• Oxygenation (PaO₂/FiO₂ ratio with PEEP ≥5 cm H₂O):
• Mild: 200–300 mmHg
• Moderate: 100–200 mmHg
• Severe:

02/09/2025

Leukemia

A cancer of the blood-forming tissues (bone marrow and lymphatic system) leading to abnormal, uncontrolled production of white blood cells (WBCs). These abnormal cells crowd out normal blood cells.

🛑Types of Leukemia

Classified by speed of progression (acute vs chronic) and cell line affected (lymphoid vs myeloid):
1. Acute Lymphoblastic Leukemia (ALL)
• Most common in children
• Rapid progression
2. Acute Myeloid Leukemia (AML)
• Common in adults
• Fast-growing
3. Chronic Lymphocytic Leukemia (CLL)
• Usually in older adults
• Slow progression
4. Chronic Myeloid Leukemia (CML)
• Adults, associated with Philadelphia chromosome (t(9;22))
• Can progress to acute phase (“blast crisis”)

🛑Risk Factors
• Radiation or chemotherapy exposure
• Benzene or chemical exposure
• Genetic syndromes (e.g., Down syndrome)
• Family history of leukemia

🛑Symptoms (due to bone marrow failure + infiltration)
• Anemia → fatigue, pallor, shortness of breath
• Low platelets (thrombocytopenia) → bleeding, bruising, petechiae
• Low normal WBCs → infections, fever
• Bone/joint pain
• Lymphadenopathy, hepatosplenomegaly
• Night sweats, weight loss

🛑Diagnosis
• CBC → anemia, leukocytosis/leukopenia, thrombocytopenia
• Peripheral smear → presence of blasts
• Bone marrow biopsy → definitive
• Cytogenetics (e.g., Philadelphia chromosome in CML)

🛑Treatment
• Acute leukemias (ALL, AML) → chemotherapy, targeted therapy, sometimes bone marrow/stem cell transplant
• Chronic leukemias (CLL, CML) → may be monitored at first; targeted therapy (e.g., imatinib for CML), chemotherapy, immunotherapy
• Supportive → blood transfusions, antibiotics, growth factors

🛑Complications
• Infections (due to neutropenia)
• Bleeding (low platelets)
• Anemia-related complications
• Tumor lysis syndrome (during treatment)







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