Correlation Analysis of Digital Mammography, Ultrasonography, and Pathologic Features in Pure Invasive Micropapillary Carcinoma of the Breast (PIMPC)

Figures & data

Table 1 Comparative Analysis of Age and Mass Size Between PIMPC and NIDC

Variables	PIMPC (N=19)	NIDC (N=40)	t	P
Age (y)	54.47±9.94	60.80±8.86	−2.46	0.017
Size of mass (cm)	2.09±0.98	2.62±0.84	−2.11	0.040

Abbreviations: PIMPC, pure invasive micropapillary carcinoma of the breast; NIDC, nonspecific invasive ductal carcinoma of the breast.

Table 2 Comparative Analysis of PIMPC and NIDC Imaging Manifestations

Imaging Features	PIMPC (N=19)	NIDC (N=40)	χ²	P
Age (y)
<45	3	2	5.971	0.044
45–59	12	17
≥60	4	21
Pure mass	13	26	0.067	0.797
Mass with calcifications	6	14
With spiculations or the crab claw sign	17	20	8.583	0.004
Without spiculations	2	20
No blood flow (score=0–1)	10	27	1.218	0.388
Blood flow present (score=2–3)	9	13

Abbreviations: PIMPC, pure invasive micropapillary carcinoma of the breast; NIDC, nonspecific invasive ductal carcinoma of the breast.

Figure 1 Image of a 65-year-old female patient in the PIMPC group. (A) The X-ray shows a high-density oval mass in the upper outer quadrant of the right breast with infiltrative margins and the burr sign. (B) The ultrasound shows a hypoechoic mass with uneven internal echoes and slightly reduced posterior echoes. The margin exhibits a crab claw-like pattern. The pathologic diagnosis was invasive micropapillary carcinoma of the right breast, 1.8 cm×1.5 cm×1.2 cm in size.

Figure 2 Image of a 72-year-old female patient. (A) The X-ray shows a high-density oval mass in the upper outer quadrant of the right breast with infiltrative margins and no burr sign. (B) The ultrasound shows a hypoechoic mass with uneven internal echoes and slightly reduced posterior echoes. The pathologic diagnosis was a non-specific invasive ductal carcinoma of the right breast (grade II), 2.8 cm×2.5 cm×2 cm in size.