Desmoid fibromatosis of the breast; a rare case report

Desmoid fibromatosis of the breast

Desmoid-type fibromatosis (DTF) is a rare non-metastatic mesenchymal tumour that accounts for only 0.2% of all primary breast neoplasms. This locally aggressive tumour has a high recurrence rate and primarily affects women aged 20-40 years. DTF often presents with features mimicking breast carcinoma, posing diagnostic challenges and the risk of mismanagement. We report a case of a young woman with a left-sided breast mass and skin dimpling. Initial ultrasound and core needle biopsy findings suggested adenosis and intraductal papilloma. Due to the strong clinical suspicion of malignancy, a wide local excision was performed, which confirmed DTF. The patient is currently under surveillance with a regular MRI on follow-up. This case underscores the diagnostic difficulty of DTF, and due to its rarity and limited data, optimal management is debated. Current guidelines favour a conservative 'watch and wait' strategy, with surgery reserved for symptomatic cases. Close follow-up is crucial due to the high risk of recurrence.

Complex Surgical Management of Extensive Chest-Wall Desmoid Fibromatosis

Desmoid fibromatosis (DF) is a rare tumor that arises from fibroblasts and myofibroblasts and typically presents on the trunk and limbs. While metastasis of fibromatosis is exceedingly uncommon, DF can spread rapidly to adjacent tissue. Its aggressive nature and frequent recurrence pose challenges for treatment, often requiring a multidisciplinary approach. This case represents the multidisciplinary workup for the identification and management of a rare presentation of desmoid fibromatosis involving the breast. It also discusses the post-surgical follow-up of the patient after a complex resection and reconstruction. We report a case of a patient treated at George Washington University Hospital, Washington, DC. A 26-year-old woman presented with left chest pain. Physical examination revealed an approximately 12-13 cm, ill-defined, immobile mass arising from the left breast. An MRI demonstrated a 9.5 cm spiculated mass involving the left pectoralis major muscle and underlying costal cartilage junctions. The tumor extended deep to the rib margin and along the anterior margin of the pleura. The mass was resected en bloc in a joint case with thoracic and general surgery and reconstructed with a bilateral bi-pedicled, muscle-sparing, transverse rectus abdominis myocutaneous free flap with plastic surgery. Pathology demonstrated desmoid fibromatosis. In conclusion, desmoid tumors of the breast represent a very rare breast neoplasm that can imitate other breast masses, both benign and malignant. Surgery remains an important treatment option and may require coordination and complex surgical planning between various surgical subspecialties.

Diagnosis and Management of Desmoid Fibromatosis of the Breast

Desmoid fibromatosis of the breast (also known as desmoid tumor of the breast) is a rare entity infrequently encountered by oncologists and surgeons caring for patients with breast disease. The current body of literature is highly reliant on case series and extrapolations from other sites of desmoid tumor-related disease. Much remains unclear regarding the pathological origins, natural history, and response to treatment of this condition. Traditional treatment strategies have centered on surgical resection, which may result in significantly disfiguring cosmetic and functional outcomes, frequent need for re-operation, and associated morbidity. There are limited data to support the superiority of upfront surgical resection when compared to medical therapy or watchful waiting strategies. Current treatment guidelines for desmoid tumors do not focus on the breast as a site of disease and are purposefully ambiguous due to the paucity of evidence available. We aim to review the literature concerning desmoid fibromatosis of the breast and propose an algorithm for current evidence-based management of this rare disease in the context of our experience with this pathology at a high-volume quaternary referral center.

Extra‑abdominal recurrent aggressive fibromatosis: A case series and a literature review

Aggressive fibromatosis is a rare clonal proliferative tumor arising from mesenchymal cells in the fascia and musculoaponeurotic structures. The aim of the present study was to describe several cases of extra-abdominal recurrent aggressive fibromatosis. The present study was a single-center retrospective case series of patients with recurrent aggressive fibromatosis. The cases were managed at a single private facility. A total of 9 patients with recurrent fibromatosis were included. The mean and median ages of the patients were 29 and 30 years, respectively. In total, two thirds (66.67%) of the cases were female. A negative previous medical history was reported in 7 cases (77.7%), and diabetes and hypertension were reported in 1 case (11.1%). Overall, only 1 case (11.1%) had a family history of breast fibromatosis. The time interval between primary tumor resection and recurrent presentation was 28 months. In 6 cases (66.7%), the tumor was located in the extremities. Pain was the most common presenting symptom in 6 cases (66.7%). All patients had their recurring tumor surgically removed, followed by radiation in 5 cases. The resection margin was positive in 4 cases (44.4%). Each patient was subjected to a careful three-month follow-up for recurrences. On the whole, the present study demonstrates that despite the fact that several therapeutic approaches for extra-abdominal recurrent aggressive fibromatosis have been described in the literature, there is a significant likelihood of recurrence following resection.

Desmoid fibromatosis of the breast occurring after breast reduction surgery mimicking a carcinoma: A rare case report

Introduction

Desmoid tumors are benign mesenchymal tumors developed at the expense of muscular fasciae and aponeuroses. The mammary localization is a rare entity, representing less than 0.2% of all breast tumors. It is characterized by a strictly local evolution and its tendency to recur without giving metastases. Its clinical and radiological presentation is similar to a breast carcinoma which is the main differential diagnosis.

Case presentation

Patient aged 51 years, primigravida primiparous, followed for right breast cancer diagnosed at the age of 49 years for which she received a right mastectomy and axillary lymphnode dissection and contralateral breast reduction. It was a 4 cm infiltrating ductal carcinoma, SBR III Luminal B, 0 N+/20 N with presence of fibrous mastopathy without sign of malignancy at the left breast reduction specimen.The patient received adjuvant chemotherapy, external radiotherapy and hormone therapy.One year after surgery, the patient returned for a four x 2 cm left breast nodule in the upper medial quadrant. The biopsy confirmed the diagnosis of fibromatosis of the breast. A wide local excision was performed.

Discussion

The etiology of this tumor is unknown, however, physical, hormonal and genetic factors play an important role in the development of desmoid tumor.The clinical presentation is similar to breast carcinoma, making it difficult to differentiate this tumor from breast carcinoma. Breast imaging techniques are not specific for desmoid fibromatosis. Treatment is based primarily on complete surgical excision.

Conclusion

Breast fibromatosis is a rare entity, clinically and radiologically mimicking breast cancer. Only histology will provide the diagnosis. The treatment of choice is based on complete surgical excision with healthy safety margins.