41 一位32歲經期規則婦女，未曾生育，右側乳房有一腫塊約兩個月，至門診就診。乳房檢查外觀對稱，皮膚無凹陷。觸診發現右側乳房10點鐘方向有一腫瘤，外緣不規則，但是可以移動，約2公分大小。超音波檢查顯示低回音病灶（hypoechoic lesion），檢查結果報告為BI-RADS Category: 4。試問下列何者為對病患最適宜的建議？
高度懷疑為惡性腫瘤可直接安排乳房切除手術（mastectomy）
可安排門診6個月後再追蹤
可追蹤3個月再安排乳房X光攝影影像學檢查（mammography）
安排門診粗針穿刺檢查（core needle biopsy）

BI-RADS Category: 4

Breast Imaging Reporting and Data System (BI-RADS)

A negative diagnostic examination is one that is negative, with a benign or probably benign finding (BI-RADS 1, 2 or 3).
In BI-RADS 3 the radiologist prefers to establish the stability of a lesion by short term follow-up.
In the evaluation of your BI-RADS 3 lesions the malignancy rate should be <>
A positive diagnostic examination is one that requires a tissue diagnosis (BI-RADS 4 and 5).
In BI-RADS 4 the radiologist has sufficient concern to urge a biopsy (2-95% chance of malignancy).
In BI-RADS 5 the chance of malignancy should be > 95%.

BI-RADS 0
Need Additional Imaging Evaluation and/or Prior Mammograms For Comparison:

BI-RADS 1
Negative:
There is nothing to comment on.

BI-RADS 2
Benign Finding:
Like BI-RADS 1, this is a normal assessment, but here, the interpreter chooses to describe a benign finding in the mammography report.

BI-RADS 3
Probably Benign Finding - Initial Short-Interval Follow-Up Suggested:

BI-RADS 4
Suspicious Abnormality - Biopsy Should Be Considered:

BI-RADS 5
Highly Suggestive of Malignancy. Appropriate Action Should Be Taken:

BI-RADS 6
Known Biopsy Proven Malignancy. Appropriate Action Should Be Taken