Abstract
Late hematoma associated with breast implants used in esthetic and reconstructive breast surgery represents a rare entity. These hematomas do not have a clear etiology, but triggering events like trauma, anticoagulant use, capsule contracture, or chronic inflammation are reported in literature. We describe an 82-year-old patient who developed a unilateral intra-capsular hematoma 19 years after mastectomy and breast reconstruction with McGhan 445 g implant. Differential diagnosis with anaplastic large cell lymphoma (ALCL) was considered and potential causes of hematoma were evaluated. Constant pressure forces on chest wall were defined as pathophysiological cause. A systematic literature review concerning late hematoma cases was carried out, focusing on late hematoma etiology and various surgical treatments.
Level of evidence: Level V, diagnostic study.
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Introduction
Early hematoma is a well-documented complication observed in 2–10.3% of patients who underwent implant breast surgery [1, 2]. To date, peri-prosthetic late hematoma remains a very uncommon complication with increasing cases over last years in reconstructive and esthetic breast surgery. According to a recent review, [3] only 18 patients have reported late hematoma after reconstructive implant procedure and 31 after esthetic purpose with implants [4]. The most lasting breast implantation followed by explantation was reported in 2007 by Nahabedian [5], where the prosthesis removal was performed 41 years after its positioning, with late hematoma as the principle reason for surgery. Late hematomas do not have clear etiological mechanisms or specific symptoms, even if some authors [3] have suggested several triggering events like trauma, anticoagulant use, physical strain, post-chemotherapy immunodeficiency, or highly vascular inflammatory response for polyurethane-coated implants. However, a peri-prosthetic fluid effusion may represent the clinical manifestation of breast implant associated-anaplastic large cell lymphoma (BIA-ALCL) [6]. ALCL clinically presents as a delayed, persistent peri-prosthetic seroma with a consequent breast swelling and other nonspecific clinical signs [7, 8]. Therefore, it should be considered in the differential diagnosis of breast swelling. The estimated incidence of BIA-ALCL is 2.03 per 1 million person years with an estimated prevalence of 1 per 30,000 women with breast implants [9]. Exclusion diagnosis is confirmed by immuno-histological and cytological findings of peri-prosthetic fluid, because BIA-ALCL is characterized by abnormal CD30 positive and anaplastic lymphoma kinase (ALK) negative lymphocytes. Expression of other T cell antigens, e.g., CD4 (84%), CD43 (80%), CD3 (30%), CD45 (36%), and CD2 (30%), is variable [10, 11].
In this article, we present a unique clinical case of 82-year-old female patient who came to our unit for an abrupt monolateral breast swelling. Nineteen years before, she had undergone mastectomy and two-stage expander/prosthesis breast reconstruction. In this clinical case, imaging data of CT and MRI showed no certain signs of intra- or extra-capsular implant rupture and could not discriminate a peri-prosthetic seroma from hematoma. Intraoperatively, a large late hematoma was found and an original etiological hypothesis was identified.
Case report
In January 2018, an 82-year-old woman came to first aid unit of Policlinico Umberto I Hospital for a non-surgical moderate pericardial effusion (18 mm). She presented a medical history of treated hypertension, left nephrectomy for renal tuberculosis (1972), treated chronic renal failure, and obstructive chronic bronchopathy (since 2009). In February 1999, she had developed a ductal infiltrating breast cancer and underwent a left radical skin-reducing mastectomy and axillary lymphadenectomy, followed by an immediate reconstruction with tissue expander, placed under pectoralis major and serratus anterior. Post-surgical hormone therapy was performed. The tissue expander was replaced by a definitive prosthesis McGhan 445 g (Natrelle 410, Allergan®, Inc., Irvine, Calif; Mentor®, Breast Implants, Santa Barbara, CA, USA) in June 2000.
During the medical examination at first aid unit, left breast deformity was noted and the patient was referred to our plastic surgery unit. The patient showed a mammographic ultrasound exam from November 2017, which reported the presence of a voluminous seroma of 1500 ml and a severe prosthetic capsule contraction. The patient told that the cause of this examination was a slow swelling and consequent increase in left breast volume, which caused discomfort without pain. Our clinical examination showed an enlarged volume of the left breast and increased tension and slight inflammation of the overlying skin. Moreover, implant profile was not palpable and empty axilla for prior lymphadenectomy was evident. Given the clinical condition, high-resolution CT scan and MRI without contrast were carried out. High-resolution CT reported the presence of a voluminous liquid collection, capsular contraction, and prosthetic rupture. MRI without contrast increased the suspect of intra- and extra-capsular implant rupture and an associated peri-prosthetic fluid share (Figs. 1, 2, and 3). Moreover, MRI data evidenced an intra-capsular mass with an area of costal cartilage erosion that led us to consider ALCL in differential diagnosis (Fig. 4).
At the admission, patient’s routine laboratory test results were within normal limits (except for creatinine) and she underwent surgery. Surgical left breast dissection was performed through the previous equatorial scar. Voluminous hematoma of 1500 ml was drained and peri-capsular vessels were cauterized. Peri-prosthetic fluid was sent for pathology examination for a differential diagnosis with anaplastic large cell lymphoma (ALCL). No neoplastic cells were found and serological tests were negative for ALCL.
Despite the imaging data, the removed breast implant was found intact. The capsule was very adherent to the surrounding tissues: pectoralis major muscle band, subcutaneous fat, thoracic wall, and ribs. We noted a strange black, exophytic intra-pocket formation close to thoracic wall with soft consistency. After a complex superior pole capsulectomy, we proceeded with difficult partial inferior pole capsulectomy. Capsule was interrupted beneath the exophytic formation. We sent capsule, shaved black formation, and a fragment of wound bottom (adherent to the rib and corresponding to the back of black formation) for pathology examination. An accurate hemostasis, wash with H2O2 and saline solution, and sutures were performed. Complete healing was reached within 3 months and no complication occurred. The patient refused any further breast reconstruction surgeries.
Pathology results showed a dense hyaline fibrous capsule without neoplastic cells. Hemosiderin pigment accumulation and specific inflammatory cells were found in the black formation, which was described as fibrous tissue with hemosiderin pigment. The fragment of wound bottom showed rearrangement phenomena and necrosis areas of the superficial rib cartilage.
Discussion
A systematic literature review concerning late hematoma cases was carried out. Late breast hematoma occurrences were studied analyzing their etiology and differential diagnosis. Searching on PubMed for “late breast hematoma”, “delayed complications in breast surgery”, and “Anaplastic Large Cell Lymphoma (ALCL)”, 30 case reports regarding late hematoma were identified. Breast implant was inserted for esthetic purpose in 18 studies and for breast reconstruction in 12 reports. The average age for patients that underwent esthetic surgery was 41.65 years and 51.1 years for patients that underwent reconstructive surgery. Late hematoma onset varied from 4 months to 41 years after surgery. Several aetiologies were described and mechanical friction between the textured surface of the prosthesis and the high vascular capsule with a consequent capsule microfractures being the most common. Alike, various surgical treatments were explained, and breast implant removal with capsulectomy was the most frequent. Post-surgical outcomes were regular for most of patients, and only five cases reported complications or hematoma recurrences. These results are resumed in Table 1.
Since the first case of BIA-ALCL reported by Keech and Creech J [33], .the awareness of this rare pathology increased, and nowadays, its estimated incidence is 2.03 per 1 million person years, while its prevalence is estimated to be 1 per 30,000 women with breast implants [34]. In 2016, the World Health Organization (WHO) provisionally classified BIA-ALCL as a distinct lymphoma with disease-specific surgical treatment recommendations, [35]and in 2018, the FDA updated a safety communication in which a possible association between anaplastic large cell lymphoma (ALCL) and breast implants is showed. [36]. Reported cases to date worldwide are little more than 400, [37] and for its rarity, absolute risk remains low, even if the odds ratio for ALCL associated with breast implants is reportedly 18.2 [38]. Every spontaneous periprosthetic breast seroma not related to infection or trauma and occurring more than 1 year after surgery should be considered suspicious for BIA-ALCL [39]. BIA-ALCL has been estimated to occur in 9–13% of delayed seroma presentations [40] and it appears as a rapid onset of a spontaneous fluid collection (60–90%) or capsular mass (10–40%) at an average of 8 to 10 years after implantation [41].
BIA-ALCL must be distinguished from other, more frequent, periprosthetic liquid masses as seroma or hematoma. Late seroma is defined as a serous accumulation of periprosthetic exudate or effusion within the implant capsule, which appears at least 12 months after the implantation. It is a rare entity with an incidence of 0.88–1.84%, while earlier seroma represents a more common complication [42,42,44].
Peri-prosthetic hematoma that occurs in the early postoperative period (first 3 days usually) presents an incidence of 2–10.3% [15, 45]. Inadequate hemostasis, trauma, or coagulopathy represent the possible aetiologies.
Meanwhile, peri-prosthetic late hematomas that occur more than 6 months after surgery are considered rare complication with causes that remain often unknown [21]. The longest continuous breast implantation followed by explantation due to late hematoma was reported in 2007 by Nahabedian [5], where the prosthesis removal was performed 41 years after its positioning.
In the 76.9% of cases, it occurs in breasts with implants inserted for esthetic reasons [28] and ultrasonography and MRI appear to be useful tools for diagnosis, even if they do not distinguish late hematomas from implant ruptures easily and can give false results [19, 25, 46]. Chronic inflammation and erosion or corticosteroid therapies can damage peri-capsular arteries and lead to late capsular hematoma [17]. Traumas are considered an another factor that can bring to late hematoma formation [18, 26].
In 1979, Georgiade et al [12] was the first to report a case of late hematoma in breast implant. This one was due to large use of corticosteroid that leads to erosion of a capsular artery and consequent bleeding. After this report, several authors described various physiopathologic events related to late hematomas in breasts with implants. Bleeding secondary to contracted capsular microfractures [47] was reported as cause of bilateral late hematoma in 1992 by Marques et al [13] and in 1995 by Cederna [14]. In 2003, the first case of late hematoma in association with tissue expander (Becker implant) was reported by Goyal et al., [20] who considered infective etiology, recurrent cancer, or implant rupture as differential diagnosis to investigate. In 2004, Brikman et al. [21] described a late hematoma 9 years after breast augmentation related to highly vascular inflammatory response created by polyurethane-coated implant, while Viega et al. [22] linked the development of a late hematoma to friction forces between textured prosthesis surface and surrounding tissues in only 1 year after sub-glandular breast augmentation. In 2011, Ibrahim et al. [29] reported an another late hematoma case due to a bleeding disorder. The risk of late hematoma in anticoagulated patients with breast implants was previously described by Willens et al. [16] in 1996. Peters et al. [30] described a series of five cases of late hematomas that occurred from 9 to 38 years after breast augmentation surgeries. The authors portray those cases like chronic expanding hematomas [48] as they found multiple areas of recent and older hemorrhage within the structure of the capsules and on their surface. This comparison of late breast hematomas with chronic subdural hematomas was described by Roman [23] in 2005 even. In the past year, 2018, two cases of late hematoma were reported: Kim et al. [31] explained its development as a consequence of severe capsular contracture, while Dean et al. [32] described a case of silicone extravasation that may have led to chronic lymphocytic granulomatous reaction and a consequent recurrent acute-on-chronic hematoma.
Grippaudo et al. [3] in 2013 reported a singular case of late hematoma developed 2 years after breast surgery, due to mechanical friction in the space between the two layers of a double capsule. In the same article, a review of the literature is displayed and several cases of late hematomas are described. Late hematoma development between the two layers of a double capsule was also reported by Cagli et al. [25] in 2007. In this paper, the hematoma developed 4 months after an augmentation mammoplasty. Its physiopathologic cause was referable to a 10-min bilateral myoelectrostimulation in patient’s upper arms, even if none of the electrodes was positioned on the pectoralis muscles.
Clear etiology of late hematoma is not always identified. Schiavon et al. [24] report an example of unknown etiology of late hematoma, showing a case that presented as a recurrent late complication, even. No causative factor was found also in the original case described by McArdle et al., [27] in which the patient presented late hematoma followed by late seroma 9 months after.
We would like to show the case that came to our unit, which appears to depend on original physiopathologic causes not described before. Our patient did not have painful swelling and there was not a triggering event. Differential diagnosis with ALCL was carried out with pathologic exam that did not find neoplastic cells. Based on macroscopic and pathologic exam evidences, we suggest that the implant applied a constant and continuous pressure on soft surrounding tissues. This force may have eroded tissues of thoracic wall until intercostal vessel damage and it caused bleeding with consequent late hematoma and the black formation that was identified as a necrosis area.
The first case reported by Georgiade et al. [12] is the only one in which a precise source of active bleeding in late breast hematoma was described. We show the second case in which the source of bleeding is identified and an original pathophysiology is suspected.
Conclusions
In the last years, ALCL has elicited much interest in scientific society as one of the most rare and important breast implant-related complications. The ALCL phenomenon is widely discussed in many scientific journals [49] and may mislead surgeons. In every clinical case, physicians have to evaluate variables and differential diagnosis is led by accurate clinical examination, imaging data, and laboratory tests. In our case, late hematoma diagnosis was validated by surgery and laboratory tests because imaging data were not enough.
To date, peri-prosthetic late hematomas are considered a rare complication. Their pathophysiology is hard to explain and several authors reported in literature various possible aetiologies. In this specific report, we suppose that constant and continuous prosthesis’s pressure on soft surrounding tissues, associated to high blood pressure, may have involved tissues of thoracic wall until causing rupture of a small costal vessel, producing a late bleeding with consequent hematoma. However, other reports are useful to establish frequency, etiology, and clinical manifestations of this rare complication that has presented a noticeable increase in recent years. Plastic surgeons have to know this rare condition and apply proper management when it is necessary.
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Fioramonti, P., Lovero, S., Kaciulyte, J. et al. An unusual case of late hematoma after implant-based breast reconstruction mimicking an anaplastic large cell lymphoma: a case report and literature review. Eur J Plast Surg 45, 187–196 (2022). https://doi.org/10.1007/s00238-021-01783-8
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DOI: https://doi.org/10.1007/s00238-021-01783-8