MCQ For Discussion on Sebaceous cyst
A cystic swelling with a punctum is likely to be:
a. Lipoma
b. Dermoid
c. Neurofibroma
d. Sebaceous cyst ✅
Answer: d
Solution
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A cystic swelling with a punctum is a sebaceous cyst.
Classification of Cysts
A. Congenital
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Dermoids
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Thyroglossal cysts
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Urachal cysts
B. Acquired
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Retention cysts → Sebaceous cysts, Bartholin cysts, parotid/breast cysts, ranula
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Distention cysts → Colloid goiter, ovarian cysts, lymph cysts
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Exudation cysts → Hydrocele
C. False cysts (no epithelial lining)
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Pseudocyst of pancreas
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Hematoma
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Plunging ranula
Notes on Ranula
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Ranula: Retention cyst due to obstruction of salivary glands
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Plunging ranula: Extravasation cyst due to obstruction and rupture of sublingual salivary glands
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| sebaceous cyst |
Swellings that are brilliantly transilluminant
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Ranula
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Cystic hygroma & lymph cyst
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Primary hydrocele
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Epididymal cyst
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Meningocele
Swellings that are cross-fluctuant
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Psoas abscess
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Bilocular hydrocele
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Plunging ranula
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Compound ganglion of palm
