Inflammatory myofibroblastic tumors (IMTs) are uncommon breast lesions that consist of spindle cells accompanied by plasma cell-rich inflammatory infiltration, which may mimic breast cancer clinico-radiologically. A woman aged 38 years with a breast mass was referred to our general surgery clinic. The physical examination revealed a mass with irregular borders in the upper outer quadrant of the left breast. In mammography, the lesion was 15 mm in diameter with a spheric form and high density. Ultrasonographically, the mass was solid, heterogeneous, and hypoechoic with posterior enhancement. Histopathologic examination of a core needle biopsy revealed a proliferation of spindle cells with eosinophilic cytoplasm and mild nuclear atypia, which showed negative immunostaining for pancytokeratin, HMWCK, CAM5.2, p63, CD34, β-catenin, and ALK but diffuse positivity for smooth muscle alpha (SMA). The lesion was reported as a "spindle cell lesion" and excision with clear margins was recommended. In the lumpectomy specimen, the lesion consisted of spindle cells that formed fascicles and infiltrated the surrounding breast parenchyma. Lymphocytes and plasmocytes scattered among spindle cells were noted. Necrosis, increased mitotic activity, nuclear pleomorphism and hyperchromasia were not detected. Immunohistochemical findings were the same in the core needle biopsy. The Ki-67 proliferation index was below 5%. With these findings, differential diagnoses were ruled out and the tumor was reported as IMT. In close proximity to this lesion, areas of columnar cell lesion with atypia and surrounding pseudoangiomatous stromal hyperplasia were seen. Patient has a follow-up of 16 months without recurrence.

Multidisciplinary tumor boards (MDTBs) play a central role in breast cancer management by integrating imaging findings with clinical and pathological infor

Background and Objectives: Among breast cancer molecular types, HER2 positive and triple negative (TN) subtypes have the highest likelihood of pathological complete response (pCR), which is a surrogate marker for reduced recurrence and improved patient survival after neoadjuvant systemic treatment (NST). Preoperative pathological identification of these exceptional responders is a new era. Therefore, we aimed to determine the accuracy of trucut biopsy in identifying the exceptional responders in selected molecular subtypes of breast cancer patients. Materials and Methods: This two-centre, observational, single-arm, prospective, pilot study was conducted between January and September 2024. The patients with TN or HER2 positive breast cancer whose breast tumour had completely disappeared on the radiological assessment including MRI after neoadjuvant therapy were enrolled. To assess neoadjuvant treatment response, a standardised biopsy protocol was used, consisting of 10 samples from the marked tumour area per patient by 12 G core needle. Then, all patients underwent surgery. The pathological results of both postchemo-presurgical biopsy and surgical breast specimen were compared. Results: The study included 20 patients. The mean age of the patients was 47.3 years. The median tumour size at diagnosis was 23.1 mm. All biopsy results were concordant with the findings of surgical specimen. Seventeen patients had a complete response. The remaining 3 patients had residual disease. Conclusions: Along with thorough patient selection, post-chemo radiological assessment and the reliable biopsy technique are the key points in accurately predicting response to neoadjuvant treatment. If an image-guided core biopsy confirms elimination of tumour tissue at the marked tumour area with a radiological complete response on MRI after NST in breast cancer patients with selected molecular subtypes, these may be suitable patients as exceptional responders in whom we can omit breast surgery.

Aim: Abdominal Ultrasonography (US) and Computed Tomography (CT) examinations are imaging methods frequently used in Radiology Clinics. During these examinations, cystic lesions are frequently detected in the abdomen. It is an important problem to identify and characterize the clinical significance of these cysts.Methods: The findings of 145 patients who underwent abdominal imaging in the US and CT units of the Istanbul Training and Research Hospital Radiology Clinic and were found to have cystic lesions were analyzed retrospectively. The CT findings of cystic lesions detected in the abdominal organs or the abdominal cavity were reviewed, and the contribution of the new US image acquisition method, Tissue Harmonic Imaging (THI), to the characterization of cysts was examined.Results: A total of 145 patients, 56 men (39.3%) and 89 women (60.7%) with cystic lesions in the abdomen, were included. We detected cystic lesions most frequently in the kidneys (n:68, 46.89%) and second most frequently in the liver (n:65; 44.82%). In addition, we detected cystic lesions in the spleen in 5 cases (3.44%), in the pancreas in 7 cases (4.82%), and in the abdominal cavity in 5 cases (3.44%). In all our cases, cystic lesions could be visualized in both THI imaging and CT examination.Conclusion: THI examination provides valuable information in characterizing cystic lesions, especially by showing the wall feature of the cyst, the internal septa and the presence of intra-cystic solid component, while CT examination especially shows the wall calcification and the presence of air in the abscess, as well as the intramural solid component.

Pittsburgh Classification and Treatment Algorithm for Idiopathic Granulomatous Mastitis: A Multicenter Cohort Study - European Journal of Breast Health

Patients with residual disease after neoadjuvant chemotherapy have a relative risk of developing recurrence. This study investigates the risk factors for recurrence in locally advanced breast cancer patients with residual disease and evaluates survival analysis.