Zusammenfassung
Epitheloide Weichgewebstumoren bestehen ausschließlich aus epitheloiden Tumorzellen. Biphasische Tumoren sind hingegen aus einer spindelzelligen und einer epitheloiden Komponente aufgebaut. Die seltenen Mischtumoren des Weichgewebes zeigen eine breitere Vielfalt der zellulären und Stromadifferenzierung, besitzen aber auch wenigstens eine, ggf. mehrere epitheloide Anteile.
Aufgrund der verblüffenden Ähnlichkeit mancher Entitäten untereinander und gegenüber den häufigeren Metastasen im Weichgewebe von Karzinomen, Karzinosarkomen und Melanomen, dem Mesotheliom oder bestimmten Lymphomen ist die Diagnostik oft ausgesprochen schwierig. Der Nachweis bestimmter molekularer Veränderungen (meist chromosomale Translokationen) hat zu Änderungen in der Tumorklassifikation, aber auch viel zur verbesserten pathologischen Diagnostik (z. B. durch Entwicklung potenter diagnostischer Antikörper) und zum biologischen Verständnis beigetragen.
Diese Übersicht soll dem Pathologen aus Sicht der morphologischen Mustererkennung eine Hilfestellung zur Diagnostik dieser seltenen Tumoren dienen. Die wichtigsten Entitäten werden ausführlicher besprochen und abgebildet, wobei stets auch neueste immunhistochemische und molekulare Aspekte einfließen und die Differenzialdiagnose zu ähnlichen Tumoren gewürdigt wird.
Abstract
Epithelioid soft tissue tumors consist exclusively of epithelioid tumor cells. Biphasic tumors are composed of both a spindle-cell and an epithelioid component. The rare mixed tumors of soft tissue show a broader variety of cellular and stromal differentiation but also include at least one, possibly several, epithelioid portions.
The close morphological similarity of some of these entities with each other, as well as with the more frequent soft tissue metastases of carcinomas, carcinosarcomas, and melanomas, to malignant mesothelioma and certain lymphomas, can often make the correct diagnosis extremely difficult. Recent advances in the detection of certain molecular alterations (mostly chromosomal translocations) have contributed to changes in tumor classification but also to improved pathological diagnostics (e.g. through the development of potent diagnostic antibodies) and biological understanding.
The present overview should help the pathologist in the diagnosis of these rare tumors through the classical approach of morphological pattern recognition. The most important entities are discussed and illustrated in more detail, with the incorporation of the latest immunohistochemical and molecular aspects and the differential diagnosis of similar tumors.
Abbreviations
- AFH:
-
Angiomatoides fibröses Histiozytom
- AWS:
-
Alveoläres Weichteilsarkom
- BSS:
-
Biphänotypisches sinunasales Sarkom
- CK:
-
Zytokeratin
- dES:
-
Distales epitheloides Sarkom
- EMA:
-
Epitheliales Membranantigen
- EMC:
-
Extraskelettales myxoides Chondrosarkom
- ES:
-
Epitheloides Sarkom
- FISH:
-
Fluoreszenz-in-situ-Hybridisierung
- HPF:
-
„High-power field“ (Hauptgesichtsfeld)
- KZS:
-
Klarzellsarkom
- lg-FMS:
-
Low-grade fibromyxoides Sarkom
- ME:
-
Myoepitheliom
- MEC:
-
Myoepitheliales Karzinom
- MPNST:
-
Maligner peripherer Nervenscheidentumor
- mRT:
-
Maligner Rhabdoidtumor
- NOS:
-
„Not otherwise specified“ (nicht weiter spezifizierbar)
- OFMT:
-
Ossifizierender fibromyxoider Tumor
- PECom:
-
Tumor mit perivaskulärer Epitheloidzelldifferenzierung
- pES:
-
Proximales epitheloides Sarkom
- SEF:
-
Sklerosierendes epitheloides Fibroarkom
- SS:
-
Synoviales Sarkom
Literatur
Agaimy A (2019) Myxoide Weichgewebstumoren. Ein Algorithmus zur Differenzialdiagnose. Pathologe. https://doi.org/10.1007/s00292-019-0623-2
Antonescu CR, Tschernyavsky SJ, Woodruff JM, Jungbluth AA, Brennan MF, Ladanyi M (2002) Molecular diagnosis of clear cell sarcoma: detection of EWS-ATF1 and MITF-M transcripts and histopathological and ultrastructural analysis of 12 cases. J Mol Diagn 4(1):44–52
Argani P, Lal P, Hutchinson B, Lui MY, Reuter VE, Ladanyi M (2003) Aberrant nuclear immunoreactivity for TFE3 in neoplasms with TFE3 gene fusions: a sensitive and specific immunohistochemical assay. Am J Surg Pathol 27(6):750–761
Casanova M, Ferrari A, Bisogno G, Cecchetto G, Basso E, De Bernardi B, Indolfi P, Fossati Bellani F, Carli M (2000) Alveolar soft part sarcoma in children and adolescents: A report from the Soft-Tissue Sarcoma Italian Cooperative Group. Ann Oncol 11(11):1445–1449
Chbani L, Guillou L, Terrier P, Decouvelaere AV, Grégoire F, Terrier-Lacombe MJ, Ranchère D, Robin YM, Collin F, Fréneaux P, Coindre JM (2009) Epithelioid sarcoma: a clinicopathologic and immunohistochemical analysis of 106 cases from the French sarcoma group. Am J Clin Pathol 131(2):222–227
Christopherson WM, Foote FW, Stewart FW (1952) Alveolar soft-part sarcomas; structurally characteristic tumors of uncertain histogenesis. Cancer 5(1):100–111
Doyle LA, Wang WL, Dal Cin P, Lopez-Terrada D, Mertens F, Lazar AJ, Fletcher CD, Hornick JL (2012) MUC4 is a sensitive and extremely useful marker for sclerosing epithelioid fibrosarcoma: association with FUS gene rearrangement. Am J Surg Pathol 36(10):1444–1451
Enzinger FM (1965) Clear-Cell sarcoma of tendons and sponeuroses. An analysis of 21 cases. Cancer 18:1163–1174
Enzinger FM (1970) Epitheloid Sarcoma. A sarcoma simulating a granuloma or a carcinoma. Cancer 26(5):1029–1041
Fisher C (2006) Epithelioid sarcoma of Enzinger. Adv Anat Pathol 13(3):114–211
Fletcher CDM, Bridge JA, Hogendoorn P, Mertens F (2013) WHO classification of tumours of soft tissue and Bone, 4. Aufl. IARC Press, Lyon
Folpe AL, Deyrup AT (2006) Alveolar soft-part sarcoma: a review and update. J Clin Pathol 59(11):1127–1132
Gleason BC, Hornick JL (2008) Myoepithelial tumours of skin and soft tissue: an update. Diagn Histopathol 14(11):552–562
Guillou L, Wadden C, Coindre JM, Krausz T, Fletcher CD (1997) “Proximal-type” epithelioid sarcoma, a distinctive aggressive neoplasm showing rhabdoid features. Clinicopathologic, immunohistochemical, and ultrastructural study of a series. Am J Surg Pathol 21(2):130–146
Hisaoka M, Ishida T, Kuo TT, Matsuyama A, Imamura T, Nishida K, Kuroda H, Inayama Y, Oshiro H, Kobayashi H, Nakajima T, Fukuda T, Ae K, Hashimoto H (2008) Clear cell sarcoma of soft tissue: a clinicopathologic, immunohistochemical, and molecular analysis of 33 cases. Am J Surg Pathol 32(3):452–460
Hornick JL, Dal Cin P, Fletcher CD (2009) Loss of INI1 expression is characteristic of both conventional and proximal-type epithelioid sarcoma. Am J Surg Pathol 33(4):542–550
Jawad MU, Extein J, Min ES, Scully SP (2009) Prognostic factors for survival in patients with epithelioid sarcoma: 441 cases from the SEER database. Clin Orthop Relat Res 467(11):2939–2948
Jo VY, Fletcher CD (2015) Myoepithelial neoplasms of soft tissue: an updated review of the clinicopathologic, immunophenotypic, and genetic features. Head Neck Pathol 9(1):32–38
Kawai A, Hosono A, Nakayama R, Matsumine A, Matsumoto S, Ueda T, Tsuchiya H, Beppu Y, Morioka H, Yabe H, Japanese Musculoskeletal Oncology Group (2007) Clear cell sarcoma of tendons and aponeuroses: a study of 75 patients. Cancer 109(1):109–116
Koch K, Reddemann K, Klapper W, Oschlies I (2019) Hämatologische Neoplasien als Differentialdiagnosen von Weichgewebstumoren. Pathologe. https://doi.org/10.1007/s00292-019-0588-1
Ladanyi M (2001) Fusions of the SYT and SSX genes in synovial sarcoma. Oncogene 20(40):5755–5762
Ladanyi M, Lui MY, Antonescu CR, Krause-Boehm A, Meindl A, Argani P, Healey JH, Ueda T, Yoshikawa H, Meloni-Ehrig A, Sorensen PH, Mertens F, Mandahl N, van den Berghe H, Sciot R, Dal Cin P, Bridge J (2001) The der(17)t(X;17)(p11;q25) of human alveolar soft part sarcoma fuses the TFE3 transcription factor gene to ASPL, a novel gene at 17q25. Oncogene 20(1):48–57
Le Loarer F, Watson S, Pierron G, de Montpreville VT, Ballet S, Firmin N, Auguste A, Pissaloux D, Boyault S, Paindavoine S, Dechelotte PJ, Besse B, Vignaud JM, Brevet M, Fadel E, Richer W, Treilleux I, Masliah-Planchon J, Devouassoux-Shisheboran M, Zalcman G, Allory Y, Bourdeaut F, Thivolet-Bejui F, Ranchere-Vince D, Girard N, Lantuejoul S, Galateau-Sallé F, Coindre JM, Leary A, Delattre O, Blay JY, Tirode F (2015) SMARCA4 inactivation defines a group of undifferentiated thoracic malignancies transcriptionally related to BAF-deficient sarcomas. Nat Genet 47(10):1200–1205
Lucas DR, Nascimento AG, Sim FH (1992) Clear cell sarcoma of soft tissues. Mayo Clinic experience with 35 cases. Am J Surg Pathol 16(12):1197–1204
Meis-Kindblom JM, Kindblom LG, Enzinger FM (1995) Sclerosing epithelioid fibrosarcoma. A variant of fibrosarcoma simulating carcinoma. Am J Surg Pathol 19(9):979–993
Miettinen M, Fanburg-Smith JC, Virolainen M, Shmookler BM, Fetsch JF (1999) Epithelioid sarcoma: an immunohistochemical analysis of 112 classical and variant cases and a discussion of the differential diagnosis. Hum Pathol 30(8):934–942
Oda Y, Tsuneyoishi M (2006) Extrarenal rhabdoid tumors of soft tissue: clinicopathological and molecular genetic review and distinction from other soft-tissue sarcomas with rhabdoid features. Pathol Int 56(6):287–295
Schaefer IM, Fletcher CD, Hornick JL (2016) Loss of H3K27 trimethylation distinguishes malignant peripheral nerve sheath tumors from histologic mimics. Mod Pathol 29(1):4–13
Schildhaus HU, Evert M (2019) Rundzellige Sarkome. Pathologe. https://doi.org/10.1007/s00292-019-0633-0
Stenman G, Kindblom LG, Angervall L (1992) Reciprocal translocation t(12;22)(q13;q13) in clear-cell sarcoma of tendons and aponeuroses. Genes Chromosomes Cancer 4(2):122–127
Sápi Z, Papp G, Szendrői M, Pápai Z, Plótár V, Krausz T, Fletcher CD (2016) Epigenetic regulation of SMARCB1 By miR-206, -381 and -671-5p is evident in a variety of SMARCB1 immunonegative soft tissue sarcomas, while miR-765 appears specific for epithelioid sarcoma. A miRNA study of 223 soft tissue sarcomas. Genes Chromosomes Cancer 55(10):786–802
Utpatel K, Calvisi DF, Köhler G et al (2019) Komplexität von PEComen. Diagnose, Molekulargenetik, klinisches Management. Pathologe. https://doi.org/10.1007/s00292-019-0601-8
Wang X, Bledsoe KL, Graham RP, Asmann YW, Viswanatha DS, Lewis JE, Lewis JT, Chou MM, Yaszemski MJ, Jen J, Westendorf JJ, Oliveira AM (2014) Recurrent PAX3-MAML3 fusion in biphenotypic sinonasal sarcoma. Nat Genet 46(7):666–668
Yoshida A, Kobayashi E, Kubo T, Kodaira M, Motoi T, Motoi N, Yonemori K, Ohe Y, Watanabe SI, Kawai A, Kohno T, Kishimoto H, Ichikawa H, Hiraoka N (2017) Clinicopathological and molecular characterization of SMARCA4-deficient thoracic sarcomas with comparison to potentially related entities. Mod Pathol 30(6):797–809
Author information
Authors and Affiliations
Corresponding author
Ethics declarations
Interessenkonflikt
M. Evert und H.-U. Schildhaus geben an, dass kein Interessenkonflikt besteht.
Für diesen Beitrag wurden von den Autoren keine Studien an Menschen oder Tieren durchgeführt. Für die aufgeführten Studien gelten die jeweils dort angegebenen ethischen Richtlinien.
Additional information
Redaktion
H. A. Baba, Essen
Rights and permissions
About this article
Cite this article
Evert, M., Schildhaus, HU. Epitheloide, biphasische und Mischtumoren des Weichgewebes. Pathologe 40, 393–411 (2019). https://doi.org/10.1007/s00292-019-0627-y
Published:
Issue Date:
DOI: https://doi.org/10.1007/s00292-019-0627-y