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Zorluk: ZorBreast and Endocrine Surgery

A 3131-year-old woman, currently at 1212 weeks gestation, is evaluated in the surgical oncology clinic for a new, firm, 4 cm4\text{ cm} mass in the upper outer quadrant of her right breast. Physical examination confirms the presence of a fixed, non-tender breast mass and a palpable, hard ipsilateral axillary lymph node. Assuming her final pathology ultimately reveals an estrogen receptor-positive, HER2-negative invasive ductal carcinoma, arrange the following steps in the most appropriate chronological sequence for her diagnostic workup and therapeutic management.

  1. 1Ultrasonographic evaluation of the right breast and axillary basin
  2. 2Image-guided percutaneous core needle biopsy of the lesion
  3. 3Surgical resection via modified radical mastectomy
  4. 4Administration of adjuvant anthracycline-based systemic chemotherapy
  5. 5Initiation of targeted endocrine therapy with tamoxifen

Cevap

The correct sequence begins with ultrasonography, followed by core needle biopsy, modified radical mastectomy, adjuvant chemotherapy, and finally tamoxifen therapy after delivery.
The optimal management of breast cancer in a pregnant patient requires a multidisciplinary approach balancing maternal oncologic outcomes with fetal safety. Initially, targeted ultrasound is the imaging modality of choice to characterize the mass while avoiding ionizing radiation. A core needle biopsy is then required to establish the histopathological diagnosis and receptor status. For local control, modified radical mastectomy is the standard of care because breast-conserving surgery necessitates adjuvant radiation therapy, which is strictly contraindicated during pregnancy. Following surgical recovery, adjuvant chemotherapy can be safely administered since the patient will have entered her second trimester (chemotherapy is contraindicated in the first trimester). Finally, targeted endocrine therapy (e.g., tamoxifen) for estrogen receptor-positive disease must be postponed until after parturition due to its known teratogenicity.

Adım Adım Çözüm

1
Select ultrasonography as the initial diagnostic step.
Characterizes the palpable mass and evaluates axillary nodes safely.
Ultrasound is the preferred initial imaging for palpable breast masses in pregnant women, avoiding radiation.
2
Select core needle biopsy as the next step.
Provides definitive histopathological diagnosis and receptor status.
Tissue diagnosis is a strict prerequisite before planning any definitive surgical or systemic oncologic treatment.
3
Select modified radical mastectomy as the primary therapeutic step.
Achieves definitive local disease control and axillary staging.
Mastectomy avoids the need for adjuvant radiation therapy (which would be required after a lumpectomy). Radiation is strictly contraindicated during pregnancy due to severe fetal risks.
4
Select adjuvant chemotherapy as the subsequent step.
Treats potential micrometastatic disease.
Chemotherapy is safe in the second and third trimesters. Because the patient presented at 1212 weeks, performing surgery first allows her pregnancy to progress into the safe window (second trimester) for chemotherapy administration.
5
Select endocrine therapy as the final step.
Reduces long-term recurrence risk in hormone receptor-positive disease.
Tamoxifen is highly teratogenic and its administration must be delayed until after the delivery of the infant.

Anahtar Kavram

Management of breast cancer during pregnancy requires initial ultrasound imaging, followed by mastectomy to avoid teratogenic radiation therapy, safe administration of chemotherapy only in the second or third trimesters, and strict deferral of endocrine therapy until postpartum.
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Breast and Endocrine Surgery

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