mesotheliom benign/ lokal (plauralt fibrom) ”benektet” : … foredrag.pdf · 2016-10-22 ·...

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MESOTHELIOM benign/ lokal (plauralt fibrom) malign/ diffus ”Benektet” : ”Sekundære carcinomer” (Robertson, 1924) ”Alveolært- cellecarsinom” (Willis, 1953) Akseptert: Plaurale mesotheliomer (1960)

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Page 1: MESOTHELIOM benign/ lokal (plauralt fibrom) ”Benektet” : … foredrag.pdf · 2016-10-22 · Pathology Discussion:A cross-sectional photo of the extrapleural pneumonectomy specimen

MESOTHELIOM benign/ lokal (plauralt fibrom) malign/ diffus ”Benektet” : ”Sekundære carcinomer” (Robertson, 1924) ”Alveolært- cellecarsinom” (Willis, 1953) Akseptert: Plaurale mesotheliomer (1960)

Page 2: MESOTHELIOM benign/ lokal (plauralt fibrom) ”Benektet” : … foredrag.pdf · 2016-10-22 · Pathology Discussion:A cross-sectional photo of the extrapleural pneumonectomy specimen

Tumor på serosaoverflater, plaura, peritoneum,-- Økt hyppighet Assosiert med asbestpåvirkning Gruvearbeidere i Syd-Afrika (Godwin, 1957) (Mc Caughey, 1958) (Wagner, 1960) Vest-Europa, Nord-Amerika, Australia Kontakt med Crocidolite- Asbest Også viktig økonomisk for familien!

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AE1/AE3

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30,000 deaths already and a further 60,000 by 2050

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Norge,menn og kvinner

Page 9: MESOTHELIOM benign/ lokal (plauralt fibrom) ”Benektet” : … foredrag.pdf · 2016-10-22 · Pathology Discussion:A cross-sectional photo of the extrapleural pneumonectomy specimen

Etiologi Eneste cancer med unik og klar link til en enkel Eksponering ! ! Asbestos (amphibole) Non-asbestos mineral fibres – erionite Radiation Chronic inflammation Virus (SV40)

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Diagnose: Rtg. ”Frozen chest” Cytologi Histologi Yrkesanamnese Thoracotomi (Laparotomi)

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Crocidolite: “Blue asbest”

Chrysotile: Hvit asbest. Mest brukt, ”minst farlig”

Amosite: Brown asbest

Photographs provided by Kilpatrick & Associates

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Crocidolite (Cape blue asbestod) Kumuran/ Cape provinsen 90% av plaural, Peritoneal mesotheliom Amosite Sjelden årsak Chrysotile ”Ikke tumorfremkallende”?

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Tremolite, farligst Crocidolite Amosite Chrysotile Actinolite Anthophyllite

Page 14: MESOTHELIOM benign/ lokal (plauralt fibrom) ”Benektet” : … foredrag.pdf · 2016-10-22 · Pathology Discussion:A cross-sectional photo of the extrapleural pneumonectomy specimen

Kontakt 20-40 år før tumor Asbestindustri Dokkarbeidere Selgere av asbestkomponenter Boligområder i nærheten Ca. 40% av obd. I USA – funnet

asbestoselegemer

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Ofte nær diagfragma- først Plauraoverflate/ sammenvoksning Plauraeffusjon/ hemorrhagisk Tykk, fast,hvit ”plaura” Sammenpresser lungen Pericard Motsatt plaura

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Metastaser, sent L.k., regionalt Hjerne Ben Lever Lunge Invaderer ofte opr.-/ biopsiområdet Hematogene metastaser

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Plaura/ ikke lunge– hvorfor?? Asbestfibre- trofisme for mesothelialt vev? Røyking, adjuvant faktor? Asbestfibre migrerer av respirasjon- bevegelser? Asbestfibre Uvanlig i plauraplaque Sjelden i mesotheliom

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Presenter
Presentation Notes
Spreads to lung and chest wall May have pleural effusion
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Pathology Low Power

Presenter
Presentation Notes
Pathology Discussion:A cross-sectional photo of the extrapleural pneumonectomy specimen shows healthy, uninvolved lung parenchyma. The primary pathologic finding is the marked thickening of the pleura, including involvement of the major fissure; the most pronounced thickening (up to ~2.5 cm) is at the diaphragmatic surface. In addition, there is a focal lesion at the apex. Low power microscopy shows the thickened pleura and uninvolved lung parenchyma.
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Cytologi

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1 Monofasisk epitel 2 Monofasisk sarkomatøs 3 Bifasisk= Blandet epitel/ sarkomatøs

Hovedtyper:

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Epithelioid

Sarcomatoid Biphasic (mixed)

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Tubulopapillært

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Signet ring

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Småcellet

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Sarkomatoid

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Calretinin

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EL: Lange, slanke microvilli

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DD Sarkomatoid type V andre sarkomer fibrose lokalisert fibrøs tumor Mesotheliom V adenokarsinom Mesotheliom V reaktive mesothel Bifasisk V synovial tumor, carcinoma-sarcoma

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Arr, fibrose. Plaque

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Immunhistokjemi

Pos.: Calretinin, AE1/AE3 Cytokeratin

EMA,WT1, 5/6, HBME-1, Mesothelin

Neg.: CEA, TTF-1, BG8

EM mikroskopi

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Ca. 50% dør < 1 år etter diagnosen Ca. 10% lever > 5 år

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Behandling: Kir.,Rtg.,Med.,Immun.,Gen, ---dårlig

“I have never seen a patient with (a histologically secure diagnosis of) malignant mesothelioma who has been cured……” Unngå asbest!

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”Hvis det er mistanke om en slik årsakssammenheng, kan det fremmes krav om yrkesskadetrygd og -erstatning på lokale trygdekontor”. (”Før mors”) Kirurgisk skandinavisk senter i Danmark. Kan henvise pasienter!