en Radiation Biology Radiation Biology مطالعه موردي Case Report <div style="text-align: justify;"><span style="font-size:10pt"><span style="text-justify:newspaper"><span style="text-kashida-space:50%"><span style="line-height:119%"><span style="font-family:Calibri"><span style="color:black"><span lang="en-US" style="font-size:9.0pt"><span style="font-family:Calibri"><span style="color:#1f497d"><span style="font-style:italic"><span style="font-weight:bold"><span style="language:en-US">Background</span></span></span></span></span></span><span lang="en-US" style="font-size:9.0pt"><span style="font-family:Calibri"><span style="color:#1f497d"><span style="font-weight:bold"><span style="language:en-US">:</span></span></span></span></span> <span lang="en-US" style="font-size:9.0pt"><span style="font-family:Calibri"><span style="language:en-US">This Pseudoangiomatous stromal hyperplasia (PASH), a rare benign breast tumor, manifests as a fissured pseudovascular cavity formed by interstitial hyperplasia. Imaging often presents it as a nodular or non-mass-type lesion associated with other benign lesions. Clinical detection of PASH generally reveals a rare mass type. </span></span></span><span lang="en-US" style="font-size:9.0pt"><span style="font-family:Calibri"><span style="color:#1f497d"><span style="font-style:italic"><span style="font-weight:bold"><span style="language:en-US">Materials and Methods: </span></span></span></span></span></span><span lang="en-US" style="font-size:9.0pt"><span style="font-family:Calibri"><span style="language:en-US">We report a case of a 13-year-old girl with a rapidly growing circumscribed mass in her unilateral breast. Mammography of the breast revealed a high-density mass without calcification; color Doppler ultrasound showed a low echo with arterial blood flow; magnetic resonance imaging (MRI) suggested that the mass was heterogeneous; diffusion-weighted imaging (DWI) results indicated a slightly high signal; T2-weighted imaging (T2WI) high-signal components showed a fissure without enhancement; and the time-signal intensity curve of solid components displayed a type I curve. Patient underwent surgical treatment, whereupon pathological results indicated PASH. </span></span></span><span lang="en-US" style="font-size:9.0pt"><span style="font-family:Calibri"><span style="color:#1f497d"><span style="font-style:italic"><span style="font-weight:bold"><span style="language:en-US">Conclusion: </span></span></span></span></span></span><span lang="en-US" style="font-size:9.0pt"><span style="font-family:Calibri"><span style="language:en-US">PASH presents as a rapidly growing borderline mass without calcification in a unilateral breast. Comparative analyses of the imaging characteristics of multiple MR sequences show significant enhancement of the low-signal area in T2WI results.</span></span></span></span></span></span></span></span></span></div> Comprehensive nursing, lung cancer, radiotherapy, respiratory function test, quality of life, self-care ability. 1099 1102 http://ijrr.com/browse.php?a_code=A-10-1-1283&slc_lang=en&sid=1 L. Chang 7900319475328460028886 7900319475328460028886 No Department of Radiology, Tangshan Gongren Hospital, Tangshan, 063000, China L. Shi 7900319475328460028887 7900319475328460028887 No Department of Radiology, Tangshan Maternal and Child Health Hospital, Tangshan, 063000, China L. Zhao 7900319475328460028888 7900319475328460028888 No Department of Radiology, Tangshan Gongren Hospital, Tangshan, 063000, China J. Wang 61233845@qq.com 7900319475328460028889 7900319475328460028889 Yes Department of Radiology, Tangshan Gongren Hospital, Tangshan, 063000, China