Question
Which structure is not preserved in modified radical mastectomy
| A. |
Cephalic vein
|
| B. |
Pectoralis minor
|
| C. |
Pectoralis major
|
| D. |
Branches of lntercostobrachial N.
|
Show Answer
|
Correct Answer » B
Explanation
|
|
A Modified Radical Mastectomy (MRM) involves:
-
Removal of the entire breast tissue
-
Axillary lymph node dissection (levels I–III)
-
Preservation of key structures to reduce morbidity
A. Cephalic vein – Preserved
Lies in the deltopectoral groove
Not part of axillary clearance field
Routinely preserved during MRM
B. Pectoralis minor Not preserved → Correct answer
Pectoralis minor is usually divided or retracted
Necessary to access Level III (apical) axillary nodes
Hence, not preserved in classical MRM
C. Pectoralis major Preserved
Key defining feature of modified radical (vs radical mastectomy)
Preserving it improves:
Shoulder function
Chest wall contour
D. Branches of intercostobrachial nerve- Preserved (as far as possible)
Supplies sensation to upper medial arm
Preservation reduces postoperative numbness and paresthesia
May be sacrificed if involved by tumor, but intended to be preserved
