Question

Which of the following flaps is commonly used for autologous breast reconstruction after mastectomy, and what is its primary vascular supply?

• A. Deep inferior epigastric artery
• B. Superficial inferior epigastric
• C. Deep circumflex iliac
• D. Thoracodorsal artery

Hint:

Key flap vascular anatomy: DIEP flap = Deep Inferior Epigastric Artery (muscle-sparing). Free TRAM flap = Deep Inferior Epigastric Artery. Pedicled TRAM flap = Superior Epigastric Artery. Latissimus Dorsi flap = Thoracodorsal Artery.

Answer 1

The Correct Option is A

Concept:
The question asks the clinician to identify a highly common, modern flap used specifically for autologous (patient's own tissue) breast reconstruction post-mastectomy, and to correctly associate it with its primary anatomical vascular supply.
This requires anatomical knowledge of the myocutaneous and fasciocutaneous flaps utilized in reconstructive plastic surgery.
Explanation:
• Autologous breast reconstruction typically utilizes excess skin and adipose tissue harvested either from the patient's lower abdomen or the back to aesthetically recreate the breast mound after a mastectomy.

• The current gold standard for autologous breast reconstruction is the DIEP flap (Deep Inferior Epigastric Perforator flap).

• The DIEP flap relies entirely on the Deep Inferior Epigastric Artery and its perforating branches that travel carefully through the rectus abdominis muscle. It allows for the transfer of a large volume of abdominal fat and skin up to the chest as a free flap without sacrificing or removing the underlying rectus muscle itself. This technique significantly reduces postoperative abdominal wall morbidity (e.g., hernias and core weakness) compared to the older, more destructive TRAM flap.

• The older TRAM (Transverse Rectus Abdominis Myocutaneous) flap is also based on the deep inferior epigastric artery (when performed as a free flap) or the superior epigastric artery (when performed as a pedicled flap).

• The Latissimus Dorsi (LD) flap is another very common reconstructive option, but its primary vascular supply is specifically the Thoracodorsal artery (Option D). However, the DIEP flap is currently far more favored as the premier autologous option when abdominal tissue is adequate, as it avoids a back scar and provides superior, softer breast volume.

• Given the options, the Deep inferior epigastric artery correctly matches the primary vascular supply of the highly favored, state-of-the-art DIEP flap.
Final Answer:
The deep inferior epigastric artery is the primary vascular pedicle for the widely used and preferred DIEP flap in modern autologous breast reconstruction.