Question of the day: Which of the following answer choices is true?

Question:

Which of the following answer choices is true?

	1. Simple male breast cysts seen on ultrasound do not need pathology confirmation if they show benign features.
	2. Simple breast cyst is the most common cause for clinically palpable mass in men.
	3. Simple cysts, fibroadenomas, and lobular carcinomas of the breast all have a common tissue of origin.
	4. Benign breast cysts in men are always accompanied by gynecomastia.
	5. Simple benign cysts represent the third most common benign breast lesion in men.

Answer:

The correct answer for the question "Which of the following answer choices is true?" is:

3. Simple cysts, fibroadenomas, and lobular carcinomas of the breast all have a common tissue of origin.

Explanation
1. Simple male breast cysts seen on ultrasound need pathology confirmation even if they show benign features. [Although sonographically the finding met criteria for simple benign cyst, considering the rarity of cysts in male patients due to lack of lobular units, findings were categorized as suspicious (Breast Imaging Reporting and Data System Category 4) and pathology confirmation using core needle biopsy was recommended.]

2. Simple breast cysts are very rare in men. The most common cause for palpable masses in men is gynecomastia. [Unlike epidermal inclusion cysts that represent the third most common benign lesion in men after gynecomastia and lipoma, this lesion was not located in the dermis or subcutaneous tissue.]

3. Simple cysts, fibroadenomas, and lobular carcinomas of the breast all have a common tissue of origin. [Lesions of the lobule, such as cysts, fibroadenomas, and lobular neoplasia, are generally rare in men.]

4. This was a case of breast cyst without gynecomastia.

5. Simple breast cysts are very rare in men.

From the manuscript:
Benign Breast Cyst without Associated Gynecomastia in a Male Patient: A Case Report
Radiology Case. 2011 Nov; 5(11):35-40

This article belongs to the Mamms section.

From the manuscript

Benign Breast Cyst without Associated Gynecomastia in a Male Patient: A Case Report

Free full text article: Benign Breast Cyst without Associated Gynecomastia in a Male Patient: A Case Report

Abstract
Benign simple breast cysts are commonly seen in female breasts and can present as palpable masses. They are distinctly uncommon, however, in the male breast. We report a case of simple benign cyst of the breast in a 58-year-old man newly diagnosed with mantel cell lymphoma. The cyst was first identified incidentally on a staging contrast-enhanced chest computed tomography. Further evaluation with mammography and ultrasound revealed a mass that would be typically characterized as a benign simple cyst, but was biopsied since cysts are not known to occur in male breasts. Pathology results from ultrasound-guided core needle biopsy revealed benign cyst and focal fibrosis which was concordant with the imaging findings. In this case report, we will briefly discuss breast cysts in men and their imaging features including mammography and ultrasound.

References

1. Cardenosa G. Breast imaging companion. 3rd ed Philadelphia: Lippincott Williams & Wilkins, 2008; 314-367
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