1
|
Marques-Piubelli ML, Lyapichev KA, Fnu A, Adrada B, Stewart J, Hunt KK, Clemens MW, Iyer S, Wu Y, El Hussein S, Xu J, Ok CY, Li S, Pierson DM, Ferrufino-Schmidt MC, Nahmod KA, Yoga A, Hunsicker L, Evans MG, Resetkova E, Qiu L, Khanlari M, Garces SA, Bueso-Ramos CE, Medeiros LJ, Miranda RN. The Spectrum of Non-neoplastic Changes Associated With Breast Implants: Histopathology, Imaging, and Clinical Significance. Am J Surg Pathol 2024; 48:e43-e64. [PMID: 38451836 DOI: 10.1097/pas.0000000000002198] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/09/2024]
Abstract
Breast implant-associated anaplastic large cell lymphoma has been recognized as a distinct entity in the World Health Organization classification of hematolymphoid neoplasms. These neoplasms are causally related to textured implants that were used worldwide until recently. Consequently, there is an increased demand for processing periprosthetic capsules, adding new challenges for surgeons, clinicians, and pathologists. In the literature, the focus has been on breast implant-associated anaplastic large cell lymphoma; however, benign complications related to the placement of breast implants occur in up to 20% to 30% of patients. Imaging studies are helpful in assessing patients with breast implants for evidence of implant rupture, changes in tissues surrounding the implants, or regional lymphadenopathy related to breast implants, but pathologic examination is often required. In this review, we couple our experience with a review of the literature to describe a range of benign lesions associated with breast implants that can be associated with different clinical presentations or pathogenesis and that may require different diagnostic approaches. We illustrate the spectrum of the most common of these benign disorders, highlighting their clinical, imaging, gross, and microscopic features. Finally, we propose a systematic approach for the diagnosis and handling of breast implant specimens in general.
Collapse
Affiliation(s)
| | - Kirill A Lyapichev
- Department of Pathology, University of Texas Medical Branch, Galveston, TX
| | | | | | | | | | | | - Swaminathan Iyer
- Department of Lymphoma and Myeloma, The University of Texas MD Anderson Cancer Center, Houston
| | | | - Siba El Hussein
- Department of Pathology, The University of Vermont Larner College of Medicine, Burlington, VT
| | - Jie Xu
- Department of Hematopathology
| | | | | | - Diane M Pierson
- Department of Pathology, Kings Daughters Medical Center, Ashland, KY
| | | | | | - Arthy Yoga
- Houston Methodist, Breast Surgical Oncology, Houston, TX
| | - Lisa Hunsicker
- Revalla Plastic Surgery and Medical Esthetics, Denver, CO
| | | | | | - Lianqun Qiu
- Department of Laboratory Medicine and Pathology, University of Washington, Seattle, WA
| | - Mahsa Khanlari
- Department of Pathology, St. Jude Children's Research Hospital, Memphis, TN
| | | | | | | | | |
Collapse
|
2
|
Chan A, Auclair R, Gao Q, Ghione P, Horwitz S, Dogan A, Roshal M, Lin O. Role of flow cytometric immunophenotyping in the diagnosis of breast implant-associated anaplastic large cell lymphoma: A 6-year, single-institution experience. CYTOMETRY. PART B, CLINICAL CYTOMETRY 2024; 106:117-125. [PMID: 38297808 PMCID: PMC10978229 DOI: 10.1002/cyto.b.22162] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/19/2023] [Revised: 01/05/2024] [Accepted: 01/18/2024] [Indexed: 02/02/2024]
Abstract
Breast implant-associated anaplastic large cell lymphoma (BIA-ALCL) is an uncommon mature T-cell neoplasm occurring in patients with textured breast implants, typically after 7-10 years of exposure. Although cytopathologic or histopathologic assessment is considered the gold standard diagnostic method for BIA-ALCL, flow cytometry (FC)-based immunophenotyping is recommended as an adjunct test. However, the diagnostic efficacy of FC is not well reported. We reviewed 290 FC tests from breast implant pericapsular fluid and capsule tissue from 182 patients, including 16 patients with BIA-ALCL over a 6-year period, calculating diagnostic rates and test efficacy. FC showed an overall sensitivity of 75.9%, specificity of 100%, and negative and positive predictive values of 95.4% and 100%, respectively. Blinded expert review of false-negative cases identified diagnostic pitfalls, improving sensitivity to 96.6%. Fluid samples had better rates of adequate samples for FC testing compared with tissue samples. Paired with FC testing of operating room (OR)-acquired fluid samples, capsulectomy FC specimens added no diagnostic value in patients with concurrent fluid samples; no cases had positive capsule FC with negative fluid FC. Fluid samples are adequate for FC testing more often than tissue. Capsule tissue FC specimens do not improve FC efficacy when paired with OR-acquired fluid FC samples and are often inadequate samples. FC is 100% specific for BIA-ALCL and can serve as a confirmatory test but should not be the sole diagnostic method. Awareness of sample-specific diagnostic pitfalls greatly improves the sensitivity of BIA-ALCL testing by FC.
Collapse
Affiliation(s)
- Alexander Chan
- Department of Pathology, Hematopathology Service, Memorial Sloan Kettering Cancer Center
| | - Romany Auclair
- Department of Pathology, Hematopathology Service, Memorial Sloan Kettering Cancer Center
| | - Qi Gao
- Department of Pathology, Hematopathology Service, Memorial Sloan Kettering Cancer Center
| | - Paola Ghione
- Department of Medicine, Lymphoma Service, Memorial Sloan Kettering Cancer Center
| | - Steven Horwitz
- Department of Medicine, Lymphoma Service, Memorial Sloan Kettering Cancer Center
| | - Ahmet Dogan
- Department of Pathology, Hematopathology Service, Memorial Sloan Kettering Cancer Center
| | - Mikhail Roshal
- Department of Pathology, Hematopathology Service, Memorial Sloan Kettering Cancer Center
| | - Oscar Lin
- Department of Pathology, Hematopathology Service, Memorial Sloan Kettering Cancer Center
| |
Collapse
|
3
|
Giovannini E, Travascio L, Follacchio GA, Bauckneht M, Criscuoli B, De Cataldo C, Iozzelli A, Cimini A, Ricci M. Medical Imaging of Inflammations and Infections of Breast Implants. Diagnostics (Basel) 2023; 13:diagnostics13101807. [PMID: 37238291 DOI: 10.3390/diagnostics13101807] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/18/2023] [Revised: 05/01/2023] [Accepted: 05/12/2023] [Indexed: 05/28/2023] Open
Abstract
Breast implants are widely used for reconstructive and/or cosmetic purposes. Inflammations and infections of breast implants represent important complications in clinical practice. The proper management of complications is necessary: diagnostic imaging plays a key role in detecting sites of inflammation and/or infection. The present review aims to illustrate the radiological findings of these conditions with different imaging techniques, such as mammography (MX), ultrasound (US), magnetic resonance imaging (MRI), and nuclear medicine imaging. A knowledge of these findings is essential for radiologists and nuclear medicine physicians to provide helpful information for the clinical management of these complications.
Collapse
Affiliation(s)
| | - Laura Travascio
- Nuclear Medicine Unit, P.O. Spirito Santo, 65124 Pescara, Italy
| | | | - Matteo Bauckneht
- Nuclear Medicine, IRCCS Ospedale Policlinico San Martino, 16132 Genova, Italy
- Department of Health Sciences (DISSAL), University of Genoa, 16132 Genova, Italy
| | | | - Camilla De Cataldo
- Department of Breast Imaging and Emergency Radiology, San Salvatore Hospital, 67100 L'Aquila, Italy
| | - Andrea Iozzelli
- Radiology Unit, Macerata Hospital, AST, 62100 Macerata, Italy
| | - Andrea Cimini
- Nuclear Medicine Unit, St. Salvatore Hospital, 67100 L'Aquila, Italy
| | - Maria Ricci
- Nuclear Medicine Unit, Cardarelli Hospital, 86100 Campobasso, Italy
| |
Collapse
|
4
|
Vorstenbosch J, Chu JJ, Ariyan CE, McCarthy CM, Disa JJ, Nelson JA. Clinical Implications and Management of Non-BIA-ALCL Breast Implant Capsular Pathology. Plast Reconstr Surg 2023; 151:20e-30e. [PMID: 36194076 PMCID: PMC9797444 DOI: 10.1097/prs.0000000000009780] [Citation(s) in RCA: 10] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/25/2023]
Abstract
SUMMARY The breast implant capsule is a dynamic structure that forms following the implantation of a device. Although normally benign, increased awareness of breast implant-associated anaplastic large-cell lymphoma (BIA-ALCL) highlights that disease may arise from the capsule. BIA-ALCL presents as a late seroma or mass but explains few of the late seromas found in breast implant patients. To date, many of these seromas lack a clear cause and are often described as "idiopathic." Several benign and malignant breast implant capsular diseases can cause a late seroma or mass, including breast implant-associated squamous cell carcinoma. Similar to early reports of BIA-ALCL, these conditions are rare and largely limited to case reports or series. The purpose of this special topic is to present a narrative review highlighting capsular abnormalities that contribute to the formation of late seroma or mass in an attempt to broaden the differential diagnosis and help plastic surgeons identify the cause. Specifically, we review the presentation and management of BIA-ALCL, synovial metaplasia, capsular epithelialization, late hematoma, double capsule, breast cancer, squamous cell carcinoma, mesenchymal tumor, and B-cell lymphoma. Although rare, plastic surgeons should consider these capsular conditions as causes of late seromas and masses. Usually, these conditions may be diagnosed by following the National Comprehensive Cancer Network screening guidelines for BIA-ALCL. Thorough evaluation and workup of late seromas and masses may lead to improved characterization of these rare breast implant capsular conditions and improve our understanding of their pathophysiology and management.
Collapse
Affiliation(s)
- Joshua Vorstenbosch
- Plastic and Reconstructive Surgery Service, Department of Surgery, Memorial Sloan Kettering Cancer Center, New York, NY
| | - Jacqueline J. Chu
- Plastic and Reconstructive Surgery Service, Department of Surgery, Memorial Sloan Kettering Cancer Center, New York, NY
| | - Charlotte E. Ariyan
- Gastric and Mixed Tumor Service, Department of Surgery, Memorial Sloan Kettering Cancer Center, New York, NY
| | - Colleen M. McCarthy
- Plastic and Reconstructive Surgery Service, Department of Surgery, Memorial Sloan Kettering Cancer Center, New York, NY
| | - Joseph J. Disa
- Plastic and Reconstructive Surgery Service, Department of Surgery, Memorial Sloan Kettering Cancer Center, New York, NY
| | - Jonas A. Nelson
- Plastic and Reconstructive Surgery Service, Department of Surgery, Memorial Sloan Kettering Cancer Center, New York, NY
| |
Collapse
|
5
|
Lee J, Kim SH, Lee JH, Han BK. Understanding Silicone Breast Implant-Associated Complications for Radiologists. JOURNAL OF THE KOREAN SOCIETY OF RADIOLOGY 2021; 82:49-65. [PMID: 36237459 PMCID: PMC9432405 DOI: 10.3348/jksr.2020.0208] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 12/19/2020] [Revised: 01/15/2021] [Accepted: 01/19/2021] [Indexed: 11/15/2022]
Abstract
미용적 성형 및 유방암 수술 후 재건의 목적으로 사용되는 실리콘 보형물의 사용이 국내외에서 크게 증가함에 따라 진료 영역에서 실리콘 보형물 삽입술을 받은 환자들을 어렵지 않게 접하게 되었다. 기존에 알려져 있던 보형물의 파열이나 구축과 같은 합병증 외에 최근에는 유방 보형물 연관 역형성 대세포 림프종과 같은 악성 종양과의 연관성도 보고되면서 보형물 관련한 영상 검사가 증가하고 있다. 이러한 상황에서 영상의학과 의사들은 보형물 삽입술을 받은 환자에 대해 어떤 검사가 필요하고 어떤 영상 소견이 보형물 관련 합병증을 시사하는지에 관한 충분한 지식을 갖추고 있어야 할 것이다. 본 종설에서는 영상의학과 의사들이 알아야 하는 실리콘 보형물의 다양한 합병증과 이들의 영상 소견에 대해 다루고자 한다.
Collapse
Affiliation(s)
- Jeongmin Lee
- Department of Radiology, Seoul St. Mary's Hospital, The Catholic University of Korea, Seoul, Korea
| | - Sung Hun Kim
- Department of Radiology, Seoul St. Mary's Hospital, The Catholic University of Korea, Seoul, Korea
| | - Jae Hee Lee
- Human Medical Imaging & Intervention Center, Seoul, Korea
| | - Boo Kyung Han
- Department of Radiology, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, Korea
| |
Collapse
|
6
|
Georgieva M, Kammerer S, Prantl L, Jung F, Stroszczynski C, Jung EM. Imaging of breast implant and implant-associated complications: Capsular contracture and intra- or extracapsular rupture. Clin Hemorheol Microcirc 2020; 76:221-231. [PMID: 32925022 DOI: 10.3233/ch-209218] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Abstract
BACKGROUND In recent years, follow-up after breast reconstruction with silicone implants and the detection of complications have been relieved by the possibility of improved diagnostic methods. METHODS Between January 2015 and December 2019 a total of 40 patients (29-84 years) with silicone implants were included in this retrospective study. The implants were examined clinically and with modern imaging: general ultrasound imaging (US), magnetic resonance imaging (MRI), high resolution computed tomography (CT) and positron emission tomography -computed tomography (PET-CT). If necessary, a histological/cytological sample was taken. The breast implants were assessed by three radiologists specialized in breast imaging. The grade of capsular contracture was classified according to the Baker classification. RESULTS All 40 women obtained a clinical examination and an US diagnostic to identify early and more common complications such as implant folding and capsular fibrosis. Depending on the clinical examination and ultrasound findings additional MRI (n = 10), CT (n = 9) and/or PET-CT (n = 2) were performed. 16 patients had implants folding proven with US (n = 16), MRI (n = 6) and CT (n = 1). The grade of capsular fibrosis was determined according to the Baker classification. The following results were obtained in our study: 25 breast implants with Baker grade I and eleven breast implants with Baker grade II, both proven with US; one breast implants with Baker grade III and one breast implant with Baker grade IV, proven with US (n = 2), MRI (n = 1) and CT (n = 1). One patient had intracapsular rupture and one patient had extracapsular rupture, both detected on CT and surgically proven. No patient had a silicone accumulation in the lymph nodes. One patient had pathologically enlarged axillary lymph nodes, which were evaluated as inflammatory changes in PET-CT. Long-term complications such as the development of malignant breast tumors could not be observed. CONCLUSION To detect early complications after breast implant surgery, a regular clinical examination is indispensable. Imaging methods complement each other and if they are used multimodal, it is easier to identify early complications. Modern diagnostic modalities like ultrasound and magnetic resonance imaging expand the spectrum and improve diagnostic safety.
Collapse
Affiliation(s)
- M Georgieva
- Department of Radiology, University Hospital Regensburg, Germany
| | - S Kammerer
- Department of Radiology, University Hospital Regensburg, Germany
| | - L Prantl
- Department of Plastic, Hand, and Reconstructive Surgery, University Medical Center Regensburg, Germany
| | - F Jung
- Brandenburg University of Technology, Molecular Cell Biology, Senftenberg, Germany
| | - C Stroszczynski
- Department of Radiology, University Hospital Regensburg, Germany
| | - E M Jung
- Department of Radiology, University Hospital Regensburg, Germany
| |
Collapse
|
7
|
Mitry MA, Sogani J, Sutton EJ, Kumar P, Horwitz S, Elmi A, Patel SN, Gallagher K, Dashevsky BZ, Mango V. Rare Cancer on the Rise: An Educational Review of Breast Implant-associated Anaplastic Large Cell Lymphoma. JOURNAL OF BREAST IMAGING 2020; 2:398-407. [PMID: 38424964 DOI: 10.1093/jbi/wbaa041] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/29/2019] [Indexed: 03/02/2024]
Abstract
Breast implant-associated anaplastic large cell lymphoma (BIA-ALCL) is a rare but increasingly important diagnosis as the incidence of breast implant placement, both elective and reconstructive, continues to rise. When detected and treated early, this indolent disease carries an excellent prognosis. However, because the clinical presentation is often nonspecific, it is crucial for radiologists to accurately identify the imaging findings associated with BIA-ALCL to facilitate a timely diagnosis. This article will provide radiologists with an overview of the diagnosis, imaging findings, and management of BIA-ALCL.
Collapse
Affiliation(s)
- Maria A Mitry
- Memorial Sloan Kettering Cancer Center, Department of Radiology, New York, NY
| | - Julie Sogani
- Memorial Sloan Kettering Cancer Center, Department of Radiology, New York, NY
| | - Elizabeth J Sutton
- Memorial Sloan Kettering Cancer Center, Department of Radiology, New York, NY
| | - Priyadarshini Kumar
- Memorial Sloan Kettering Cancer Center, Department of Radiology, New York, NY
| | - Steven Horwitz
- Memorial Sloan Kettering Cancer Center, Department of Radiology, New York, NY
| | - Azadeh Elmi
- Memorial Sloan Kettering Cancer Center, Department of Radiology, New York, NY
| | - Sejal N Patel
- Memorial Sloan Kettering Cancer Center, Department of Radiology, New York, NY
| | - Katherine Gallagher
- Memorial Sloan Kettering Cancer Center, Department of Radiology, New York, NY
| | | | - Victoria Mango
- Memorial Sloan Kettering Cancer Center, Department of Radiology, New York, NY
| |
Collapse
|
8
|
Sutton EJ, Dashevsky BZ, Watson EJ, Tyagi N, Bernard‐Davila B, Martinez D, Dogan A, Horwitz SM, Cordeiro PG, Morris EA. Incidence of benign and malignant peri-implant fluid collections and masses on magnetic resonance imaging in women with silicone implants. Cancer Med 2020; 9:3261-3267. [PMID: 31568670 PMCID: PMC7221432 DOI: 10.1002/cam4.2189] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/19/2018] [Revised: 03/20/2019] [Accepted: 04/08/2019] [Indexed: 12/12/2022] Open
Abstract
BACKGROUND To assess the incidence of benign and malignant peri-implant fluid collections and/or masses on magnetic resonance imaging (MRI) in women with silicone implants who are being screened for silent implant rupture. METHODS The institutional review board approved this HIPAA-compliant retrospective study and waived informed consent. Women who underwent silicone implant oncoplastic and/or cosmetic surgery and postoperative implant-protocol MRI from 2000 to 2014 were included. Peri-implant fluid collections and/or masses were measured volumetrically. A benign peri-implant fluid collection and/or mass was pathologically proven or defined as showing 2 years of imaging and/or clinical stability. A malignant peri-implant fluid collection was pathologically proven. Incidence of peri-implant fluid collections and/or masses and positive predictive value (PPV) were calculated on a per-patient level using proportions and exact 95% confidence intervals (CIs). Fisher's exact test was used in the analysis to test statistical significance pre-defined as P-value < 0.05. RESULTS A total of 1070 women with silicone implants were included (mean age, 50.7 years; range, 40.4-53.8). Median time between reconstructive surgery and first MRI was 88.9 months (range, 0.8-1363.3). Eighteen women (1.7%) had a peri-implant fluid collection and/or mass: 15/18 (83.3%) had adequate follow-up; and only 1/15 was malignant implant associated anaplastic large cell lymphoma, with a PPV of 6.7% (95% CI: 0.003-0.0005). The median peri-implant fluid collection size was 89 mL (range, 18-450 mL). CONCLUSION Peri-implant fluid collections and/or masses identified at silicone implant protocol breast MR imaging are rarely seen 24 months after reconstructive surgery. Image-guided fine-needle aspiration with flow cytometry may be warranted to evaluate for implant-associated lymphoma.
Collapse
Affiliation(s)
- Elizabeth J. Sutton
- Department of RadiologyMemorial Sloan Kettering Cancer CenterNew YorkNew York
| | - Brittany Z. Dashevsky
- Department of RadiologyMemorial Sloan Kettering Cancer CenterNew YorkNew York
- Department of RadiologyUniversity of CaliforniaSan FranciscoCalifornia
| | - Elizabeth J. Watson
- Department of RadiologyMemorial Sloan Kettering Cancer CenterNew YorkNew York
- Department of RadiologyUniversity of VermontBurlingtonVermont
| | - Neelam Tyagi
- Department of Medical PhysicsMemorial Sloan Kettering Cancer CenterNew YorkNew York
| | | | - Danny Martinez
- Department of RadiologyMemorial Sloan Kettering Cancer CenterNew YorkNew York
| | - Ahmet Dogan
- Department of Pathology and Laboratory MedicineMemorial Sloan Kettering Cancer CenterNew YorkNew York
| | - Steven M. Horwitz
- Departmemt of MedicineMemorial Sloan Kettering Cancer CenterNew YorkNew York
| | - Peter G. Cordeiro
- Department of SurgeryMemorial Sloan Kettering Cancer CenterNew YorkNew York
| | - Elizabeth A. Morris
- Department of RadiologyMemorial Sloan Kettering Cancer CenterNew YorkNew York
| |
Collapse
|
9
|
Julien LA, Michel RP, Auger M. Breast implant-associated anaplastic large cell lymphoma and effusions: A review with emphasis on the role of cytopathology. Cancer Cytopathol 2020; 128:440-451. [PMID: 31899606 DOI: 10.1002/cncy.22233] [Citation(s) in RCA: 14] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/03/2019] [Revised: 12/09/2019] [Accepted: 12/12/2019] [Indexed: 12/27/2022]
Abstract
Breast implants are surgically implanted by the hundreds of thousands every year worldwide for reconstructive or aesthetic purposes. Complications related to breast implants include early and late effusions that are often submitted for cytopathological analysis, particularly to exclude the possibility of breast implant-associated anaplastic large cell lymphoma (BIA-ALCL), a rare disease that generally follows an indolent clinical course, although it is becoming clearer that a subset of patients with adverse features have a poorer prognosis. Since a late-onset breast implant-associated effusion is the most common initial presentation of BIA-ALCL, cytopathological analysis of these effusions is considered the cornerstone and gold standard for rapid, efficient, reliable diagnosis and is critical for appropriate management and treatment. The National Comprehensive Cancer Network recently published clinical guidelines for the diagnosis and management of BIA-ALCL and stresses the essential role of cytopathological analysis, although it remains a matter of debate if all seromas should undergo immunocytochemistry or flow cytometry, particularly for assessment of expression of CD30 irrespective of morphological appearance on cytology. Herein, we review the current knowledge on BIA-ALCL, review the key cytological findings of reactive and malignant effusions related to breast implants, and present a comprehensive cytopathological workup with the presence of atypical cells as the key and pivotal element triggering further ancillary studies. We believe this approach will ensure appropriate and cost-effective management of effusion specimens from breast implants.
Collapse
Affiliation(s)
| | - René P Michel
- Department of Pathology, McGill University, Montreal, Canada
| | - Manon Auger
- Department of Pathology, McGill University, Montreal, Canada
| |
Collapse
|