BACKGROUND

Granulomatous mastitis (GM) of the breast has long posed a clinical dilemma in terms of diagnosis and management. GM can range from acute to chronic inflammations, which will have treatment implications. Inflammation of the breast may clinically mimic breast carcinomas and pyogenic abscesses. Thus, in the absence of known etiology, such as trauma or breastfeeding, GM may be difficult to diagnose. Currently, the incidence of GM is 2.4 per 100,000 women and 0.37% of the total population in the US. The rarity of GM contributes to it being a poorly understood disease. It has no definite clinical features and is often confused with a neoplasm or infection clinically and radiologically.

OBJECTIVE

The study aimed to describe the clinical characteristics of GM seen in the Breast Care Clinic in the Philippine General Hospital (PGH) from January 2015 to June 2019. This study would initially provide institutional data on GM that is relevant in the Philippines.

METHODS

This is a retrospective observational study of patients with GM seen in the Philippine General Hospital, a national tertiary referral hospital, from January 2015 to June 2019.

RESULTS

A total of 43 patients with pathological findings of GM from January 1, 2015 to June 15, 2019 were recorded. Among these 43 patients, 98% were female. The median age was 38.9 ± 11.3 years old. In 60.5% (26 out of 43) of patients, the initial impression was breast malignancy. The most common clinical presentation in 69.8% (30 out of 43) of the subjects was a breast mass. In more than 50% of the patients, breast ultrasonography was the initial imaging performed. The histopathologic profile of the patients showed inflammation, of which, the greatest were that of chronic granulomatous inflammation (46.5%, n-20). Treatment options performed were tended more medical (53.5%, n-23) than surgical (16.3%, n-7).Among those who received medical treatment, the therapeutics given were antitubercular medications (34.9%, n-15) and antibiotics (16.3%, n-7), while the others had a combination of antitubercular and antibiotic regimen medications (2.3%, n-1); unknown treatment (25.6%, n-11) and none (11.6%, n-5). For patient outcomes, no mortalities were recorded during the study period. However, most patients had inconsistent followups. Approximately 7%-23% of the patients who had followed up within the six months showed improvement or resolution of symptoms.

CONCLUSION

This study assessed the clinical profiles of patients with GM in a national tertiary referral hospital. Internationally, there is still no consensus on the algorithm and management of GM patients. However, the authors recommend a close follow-up every two weeks to re-evaluate patient response to the medical regimen being administered. The authors recommend a prospective study with a longer follow-up period to gain a deeper understanding of GM in Filipinos.

Human ; Female ; Granulomatous Mastitis ; Asian

Diagnosis, Differential ; Female ; Granulomatous Mastitis/drug therapy* ; Humans ; Mammography

INTRODUCTION: Idiopathic granulomatous mastitis (IGM) is a rare, benign, chronic breast condition that can cause repeated abscesses or mass formation in bilateral breasts. The condition can severely impact the quality of life of affected women. This study aims to evaluate effective treatment modalities, as well as understand the demographics and clinical presentation of patients with IGM. METHODS: An 11-year retrospective review was performed of patients diagnosed with IGM from 1 January 2008 to 31 December 2018 at a tertiary breast unit. RESULTS: A total of 77 patients were included in the study. The median age at presentation was 36 years old. IGM presented most commonly as a breast lump (98.1%). The median number of flares was 2 (1-12). Of the 77 patients, 68.8% (53) were treated with antibiotics, 50.6% (39) with steroids, and 44.2% (34) underwent surgery, in the course of their IGM treatment. Forty-five (59.2%) of the 76 patients with IGM required a multimodal treatment approach to achieve remission. There was no significant difference in the number of flares no matter the initial treatment ( CONCLUSION IGM is a clinical diagnosis. It is a rare, relapsing breast inflammatory condition that affects young females with no superior treatment modality. Smoking is associated with higher number of flares of IGM and should be discouraged in IGM patients.
Adult ; Anti-Bacterial Agents/therapeutic use* ; Female ; Granulomatous Mastitis/therapy* ; Humans ; Quality of Life ; Retrospective Studies ; Treatment Outcome

PURPOSE: Idiopathic granulomatous mastitis (IGM) is a rare disease characterized by noncaseating granulomatous inflammation of unknown origin. Because its clinical features are similar to those of other type of mastitis or breast cancer, accurate diagnosis and adequate treatment are essential to ensuring a short symptom duration and improving the quality of life. METHODS: The clinical, radiologic, pathophysiologic, and treatment data for 43 patients diagnosed with IGM at the Breast Cancer Center of Gachon University Gil Medical Center between 2005 and 2016 were retrospectively reviewed. RESULTS: Forty-one patients (95.34%) were of childbearing age, seven (16.27%) had a history of lactation, and five (11.62%) had a history of oral contraceptive use. In terms of radiologic findings, 30 patients (69.77%) were diagnosed with Breast Imaging-Reporting and Data System category ≥4A lesions. Corticosteroid therapy was administered to 36 patients (83.72%); overall, 18 patients (41.86%) did not require surgery and 25 patients (58.13%) underwent partial or total mastectomy. Twelve patients (27.90%) developed recurrence. CONCLUSION: IGM is a benign disease that can be misdiagnosed as breast cancer because of its similar clinical and radiologic findings. Proper diagnosis and treatment can be difficult, but delays may lead to prolonged pain and cosmetic and socioeconomic problems. Efforts should be aimed at establishing the cause of IGM and developing efficient protocols for its diagnosis and treatment.
Breast ; Breast Neoplasms ; Diagnosis* ; Female ; Granulomatous Mastitis* ; Humans ; Immunoglobulin M ; Inflammation ; Information Systems ; Lactation ; Mastectomy, Simple ; Mastitis ; Quality of Life ; Rare Diseases ; Recurrence ; Retrospective Studies* ; Steroids

Irregular hypoechoic masses in the breast do not always indicate malignancies. Many benign breast diseases present with irregular hypoechoic masses that can mimic carcinoma on ultrasonography. Some of these diseases such as inflammation and trauma-related breast lesions could be suspected from a patient's symptoms and personal history. Careful ultrasonographic examination and biopsy could help to differentiate these from malignancies.
Abscess/ultrasonography ; Breast Diseases/pathology ; Breast Neoplasms/pathology/*ultrasonography ; Carcinoma/pathology/ultrasonography ; Female ; Fibroadenoma/pathology/ultrasonography ; Fibrocystic Breast Disease/pathology/ultrasonography ; Granulomatous Mastitis/pathology/ultrasonography ; Humans ; Ultrasonography, Mammary

OBJECTIVETo study the clinicopathologic features of granulomatous lobular mastitis and mammary duct ectasia.

METHODSThe clinicopathologic data from August 2005 to May 2013 of 32 cases of granulomatous lobular mastitis and mammary duct ectasia were retrospectively reviewed.

RESULTSThe age of patients ranged from 26 to 45 years. Two patients had no history of delivery. Fourteen patients had no history of lactation or lactational disorder in the lesional side. Most of the remaining patients had history of breast feeding. Gross examination showed that the lesions were poorly circumscribed and varied from 3 to 12 cm in greatest dimension. Tiny abscess cavities, ranging from 0.1 to 0.5 cm in diameter and containing light yellowish to greyish secretion, were demonstrated. Histologic examination showed granuloma formation and ductal dilatation. Eleven patients had received antibiotic treatment. Twelve cases were complicated by sinus formation related to skin incision and drainage. The duration of follow-up ranged from 5 to 90 months. Three cases showed ipsilateral recurrence and 3 cases had similar pathology in the contralateral breast. Four patients defaulted follow-up.

CONCLUSIONSGranulomatous lobular mastitis is associated with mammary duct ectasia. Accurate pathologic diagnosis is prudent for clinical management and control of local recurrence.

Adult ; Anti-Bacterial Agents ; therapeutic use ; Breast Diseases ; complications ; drug therapy ; pathology ; surgery ; Breast Feeding ; Dilatation, Pathologic ; complications ; drug therapy ; pathology ; surgery ; Drugs, Chinese Herbal ; therapeutic use ; Female ; Follow-Up Studies ; Granulomatous Mastitis ; complications ; drug therapy ; pathology ; surgery ; Humans ; Mammary Glands, Human ; pathology ; surgery ; Middle Aged ; Recurrence ; Retrospective Studies

PURPOSE: To present the author's experience with various treatment methods of granulomatous lobular mastitis (GLM) and to determine effective treatment methods of GLM. METHODS: Fifty patients who were diagnosed with GLM were classified into five groups based on the initial treatment methods they underwent, which included observation (n = 8), antibiotics (n = 3), steroid (n = 13), drainage (n = 14), and surgical excision (n = 12). The treatment processes in each group were examined and their clinical characteristics, treatment processes, and results were analyzed respectively. RESULTS: Success rates with each initial treatment were observation, 87.5%; antibiotics, 33.3%; steroids, 30.8%; drainage, 28.6%; and surgical excision, 91.7%. In most cases of observation, the lesions were small and the symptoms were mild. A total of 23 patients underwent surgical excision during treatment. Surgical excision showed particularly fast recovery, high success rate (90.3%) and low recurrence rate (8.7%). CONCLUSION: The clinical course of GLM is complex and the outcome of each treatment type are variable. Surgery may play an important role when a lesion is determined to be mass-forming or appears localized as an abscess pocket during breast examination or imaging study.
Abscess ; Anti-Bacterial Agents ; Breast ; Drainage ; Female ; Granulomatous Mastitis ; Humans ; Mastitis ; Recurrence ; Steroids

PURPOSE: Idiopathic granulomatous mastitis (IGM) is a rare chronic inflammatory disease of unknown etiology. The diagnosis of IGM requires that other granulomatous lesions in the breast be excluded. Tuberculous mastitis (TM) is also an uncommon disease that is often difficult to differentiate from IGM. The purpose of this study is to develop a new algorithm for the differential diagnosis and treatment of IGM and TM. METHODS: Medical records of 68 patients (58 with IGM and 10 with TM) between July 1999 and February 2009 were retrospectively reviewed. RESULTS: The mean age of the patients was 33.5 (IGM) and 40 (TM) years (p=0.018). The median follow-up was 84 months. Of the total 10 patients with TM, 5 patients had a history of pulmonary tuberculosis. The most common symptoms of the diseases were breast lump and pain. However, axillary lymphadenopathy was more seen in TM (50%) compared to IGM (20.6%) (p=0.048). TM showed more cancer-mimicking findings on radiologic study (p=0.028). In IGM, 48 patients (82.7%) underwent surgical wide excision and 21 patients (36.2%) were managed with corticosteroid therapy and antibiotics. All of the TM patients received anti-tuberculosis medications and 9 patients (90%) underwent wide excision. The mean treatment duration was 2.8 months in IGM and 8.4 months in TM. Recurrence developed in 5 patients (8.6%) in IGM and 1 patient (10%) in TM. CONCLUSION: This study shows different characteristics between IGM and TM. The IGM patients were younger and had more mastalgia symptoms than the TM patients. Axillary lymphadenopathy was seen more often in TM patients. Half of the TM patients had pulmonary tuberculosis or tuberculosis lymphadenitis. Surgical wide excision might be both therapeutic and useful for providing an exact diagnosis.
Anti-Bacterial Agents ; Breast ; Diagnosis, Differential ; Female ; Follow-Up Studies ; Granulomatous Mastitis ; Humans ; Immunoglobulin M ; Lymphadenitis ; Lymphatic Diseases ; Mastitis ; Mastodynia ; Medical Records ; Recurrence ; Retrospective Studies ; Tuberculosis ; Tuberculosis, Pulmonary

Granulomatous mastitis is a rare benign inflammatory disease of the breast with multiple etiologies such as tuberculosis, sarcoidosis, foreign body reaction, and mycotic and parasitic infections. In contrast, idiopathic granulomatous mastitis (IGM) is characterized by the presence of chronic granulomatous lobulitis in the absence of an obvious etiology. Clinically and radiologically it may mimic breast carcinoma and so awareness of surgeons, pathologists, and radiologists is essential to avoid unnecessary mastectomies. Cases of IGM are reported during antidepressant therapy in patients also showing high levels of prolactinemia. In these cases, we believe that surgical excision must be avoided being replaced with a conservative management of the pathological condition based on a corticosteroid treatment.
Breast ; Foreign-Body Reaction ; Granulomatous Mastitis ; Humans ; Hydrazines ; Hyperprolactinemia ; Immunoglobulin M ; Mastectomy ; Sarcoidosis ; Serotonin Uptake Inhibitors ; Tuberculosis

Idiopathic granulomatous mastitis (IGM) is a rare chronic inflammatory condition of unknown etiology. It occurs in young, parous women who had experienced breast feeding, and is manifested as a tender breast mass. Histologically, a discrete granulomatous lobulitis consisting of giant cells, neutrophils, epitheloid cells, and foamy macrophges is shown. Extramammary manifestations of IGM are rare. Erythema nodosum (EN), arthralgia, and episcleritis have been reported, supporting the theory that there is an autoimmune component in the etiology of IGM. Coincidence of IGM and EN is rare. Herein, we report a 28-year-old pregnant woman in whom granulomatous mastitis presented with arthralgia and EN.
Adult ; Arthralgia ; Breast ; Breast Feeding ; Erythema ; Erythema Nodosum ; Female ; Giant Cells ; Granulomatous Mastitis ; Humans ; Immunoglobulin M ; Neutrophils ; Pregnant Women ; Scleritis