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Case 37 || Solution

The answer to the given question is “Osteoid Osteoma”

M/C True Benign Bone Tumor

Age: 2nd-3rd Decade

Males > Females

Location:

Just Below Neck of Femur (Diaphysis)(M/C)

Can also occur in spine (Posterior Column) (Rarely)

Eccentric & Cortical Tumor

Structure (X-Ray):

➡️Osteoid:

Central ‘Radiolucent’ Lesion / Central Nidus (Lytic Lesion)

Nidus (seed) has:

•Dilated Blood Vessels
•Osteoblast
•Osteoclast

Central Nidus releases Prostaglandins in high amount: Causes Pain

Diameter < 2cm

➡️Osteoma:

Thick,peripheral,reactive, ‘sclerotic’ rim

C/P:

Intense Night Pain (due to PGs)

Relief by Aspirin: 90%

Mx:

Low Dose Aspirin
Radiofrequency Ablation
Curettage

Differential Diagnosis:

Osteoblastoma:

➡️Rare & Aggressive Bone Tumor
➡️Age: 2nd-3rd Decade
➡️Males > Females
➡️M/C Site: Spine (Posterior Column)
➡️Structure:

Central ‘Sclerotic’ Lesion

•Releases PGs (but less compared to previous one)
•Diameter > 2 cm

Peripheral ‘Radiolucent’ rim

➡️C/P:

Night Pain occurs, but less (due to less PGs)
Relief by Aspirin: 40-50%

➡️Mx:

Curettage/Excision with Bone Graft/cement

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Which of the following drug is not used in multiple sclerosis?
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Identify the disease based on the symptoms and examination reports 🧐

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Case 38 || Solution

The answer to the given question is “Enchondroma”

M/C Bone Tumor of Hand Bones

M/C Benign Bone Tumor of Hand Bones

Age: 2nd - 5th decade

Males > Females

Metaphyseal

Has Hyaline Cartilage

M/C site:

Hand > Feet

In Hand: Phalanges > Metacarpals

Usually SOLITARY, Rarely MULTIPLE

X-Ray:

Well Defined, Sharply Demarcated area of lysis with cortical thinning with ‘STIPPLED CALCIFICATION’

(As shown in the picture)

Treatment: Extended Curettage

Additional info:

M/C Tumor of Hand: Squamous Cell Carcinoma
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2025/07/01 00:53:38
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