[MRI features of phyllodes tumor of the breast and the pathological study].
OBJECTIVE
To analyze the features of MRI and pathology for phyllodes tumor of the breast and to improve the diagnosis level.


METHODS
The MRI data of 11 patients with phyllodes tumor of the breast were analyzed. The MRI features included morphology, signal intensity on pre-enhanced T1WI, appearance of dynamic contrast enhancement (DCE-MRI) and the type of time-signal intensity curve (TIC).


RESULTS
The pathologic diagnosis for the 11 phyllodes tumor included 6 benign, 2 borderline and 3 malignant. All of the 11 tumors showed well-defined margins and lobulated lump. The signal intensity of tumor was lower (4 cases) than or equal (7 cases) to that of normal breast tissue on T1-weighted images. On T2-weighted images, 5 cases presented variegated appearance, 6 cases displayed high signal. Four cases showed patchy high signal on T1WI and T2WI. All patients underwent DCE-MRI and showed uneven enhancement. There were 7 cases in type I of TIC and 4 cases in type II.


CONCLUSIONS
The imaging findings of phyllodes tumor on MR is characteristic but not specific, the final diagnosis still depends on the histopathologic examination.
Department of Diagnostic Radiology, Hunan Cancer Hospital; Department of Diagnostic Radiology, Affi liated Cancer Hospital of Xiangya School of Medicine, Central South University, Changsha 410013, China.
Weiwei
W
Hou
Xiaoping
X
Yu
D001943:Breast Neoplasms / Q000175:diagnosis*; D003287:Contrast Media; D005260:Female; D006801:Humans; D008279:Magnetic Resonance Imaging; D003557:Phyllodes Tumor / Q000175:diagnosis*
D003287:Contrast Media