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Idiopathic granulomatous mastitis (IGM) is a chronic inflammatory disease of the breast with unknown etiology that is characterized by granuloma formation. We analyzed the clinical, radiological, and therapeutic approaches; the recurrence rate of the disease; and the pathological findings diagnosed with mastitis in a retrospective study. We evaluated a total of 77 patients subjected to core needle or excisional biopsy with preliminary diagnosis of mastitis between January 2017-December 2019 who diagnosed with IGM, nonspecific mastitis/abscess, or periductal mastitis/plasma cell mastitis as a result of their pathological assessment. The mean age was 39.24 ± 10.6. Though 65 patients were diagnosed with IGM (84.4%), other diagnoses were reported as nonspecific mastitis/abscess (n = 9), periductal mastitis (n = 2) and plasma cell mastitis (n = 1). Recurrence occurred in 30 (39%) patients during follow-up. In patients without IGM, the number of 5-year postpartum mastitis diagnoses was significantly higher (p = 0.0008) while number of 2-year postpartum mastitis diagnoses was lower (p = 0.255) compared to those in IGM patients. The rates of axillary lymphadenopathy, bacterial culture, parity, and menopausal status were not different in patients without IGM. Linear correlation analysis did not reveal a significant relationship between radiological preliminary diagnosis and pathological diagnosis with BI-RADS classification. A detailed assessment, accompanied with clinical, radiological, and pathological findings, should be performed to achieve an accurate diagnosis and effective patient management in IGM. Furthermore, IGM should always be considered in the differential diagnosis of mastitis among breast masses., (Copyright © 2021 Elsevier Inc. All rights reserved.)

The aim of this study was to evaluate adenomatoid tumours (AT) clinicopathologically in the female genital tract and compare the histomorphological features of ATs according to their uterine or tuba-ovarian location. Cases of AT were excised and collected from female genital tracts between the years of 2010-2017. Cases were evaluated depending on their clinical findings, localisation and pathological properties. There were 14 cases of AT. Ten cases were uterine, and 4 cases were adnexal tumours. The diagnostic ratio of uterine ATs was 64.3%, and of tuba-ovarian ATs was 21.4% (P > 0.05). The size of the largest tumour was 6 cm. Two of the uterine and one of the ovarian cases had a macrocyst; 2 uterine and one ovarian case had a microcyst; and 6 uterine had a combined microcystic/trabecular pattern. Uterine cases showed a higher number of smooth muscle component, signet-ring cells and infiltrative nature compared with other cases (P < 0.05). All uterine cases were infiltrative. Most of ATs of the female genital system were small in size and incidentally diagnosed in our cases but rarely detected as an adnexal mass forming lesion which mimics a malignancy. A comparative clinicopathologic analysis of these cases should be considered with the histomorphological and immunohistochemical features for an accurate differential diagnosis., Competing Interests: Declaration of competing interest None., (Copyright © 2020 Elsevier Inc. All rights reserved.)