Getting a second opinion at a sarcoma center

Why this diagnosis, more than most, needs a sarcoma center

Three facts about intimal sarcoma make the choice of center unusually important:

• It is misdiagnosed most of the time. Seven in ten patients are first treated for a blood clot;² in one hospital series it was 95%.³ Sarcoma pathologists, with MDM2 testing, are the ones who get it right.⁶
• The operation is rare and difficult. Removing a tumour from the pulmonary artery, the heart or the aorta with clear margins is a specialised cardiothoracic or vascular operation; even a dedicated team achieved clear margins in only 45% of cases.⁵ Experience with this specific operation is not something every excellent heart surgeon has.
• The evidence base is tiny and lives in a handful of centers. The largest treatment series was assembled by 17 sarcoma reference centers pooling their cases.⁴ Those are the places where the knowledge is.

Every recent review makes the same recommendation: management in a specialised, multidisciplinary sarcoma center.¹ This is not a judgement on your local team; it is a statement about how rare this disease is.

How a second opinion works

A second opinion for a sarcoma usually means that the reference center reviews your pathology slides (they are sent by post or as digital scans), your imaging (CT, MRI, PET — on disc or via a transfer platform), and your reports, and then discusses you at their multidisciplinary tumour board. You may or may not be seen in person. The output is a written recommendation that your treating team can act on — or the center may offer to take over treatment.

Practical points:

• Asking is normal. Sarcoma specialists expect it and often initiate it themselves. Your oncologist will not be offended; if they are, that tells you something.
• Speed matters. Say clearly that this is a suspected or confirmed intimal sarcoma; reference centers prioritise fast-growing tumours.
• Bring everything. Pathology report, molecular report, operation report, all imaging with the written radiology reports, a list of treatments and dates. Our checklist includes a "what to bring" section.
• Costs. In most European public systems and in Switzerland, a second opinion at a certified center is covered; in the US, check with your insurer. Many centers offer remote (written) second opinions for a fixed fee.

Where to find one, by country

We list networks and directories rather than ranking hospitals: they are maintained by the professional bodies, they are current, and they let you find the nearest certified center. Where individual institutions are named, it is because they contributed to the published intimal sarcoma series.⁴

Europe-wide

EURACAN, the European Reference Network for rare adult solid cancers, has a sarcoma domain with designated centers in most EU countries; its website lists them.⁷ A referral within the network is the mechanism EU health systems use for exactly this kind of ultra-rare case.

Switzerland

The Swiss Sarcoma Network links the sarcoma boards of the university hospitals (Zürich, Bern, Basel, Lausanne, Geneva) and partner hospitals.¹¹ Ask your doctor for a referral to a "Sarkomboard" / "tumor board sarcomes"; pulmonary artery and cardiac tumours are handled together with the cardiac surgery and thoracic surgery departments.

Germany and Austria

Germany certifies Sarkomzentren through the Deutsche Krebsgesellschaft; the OncoMAP directory lists them by region.⁸ For molecular profiling and trial matching, the NCT/DKFZ MASTER programme in Heidelberg accepts rare cancers from across Germany. The patient organisations Deutsche Sarkom-Stiftung and Ultra Rare Sarcoma e.V. help patients navigate referrals. In Austria, the university hospitals in Vienna, Graz and Innsbruck run sarcoma boards.

United Kingdom

NHS sarcoma care is organised in specialist centres; Sarcoma UK maintains the list and a support line.⁹ The Royal Marsden (London) contributed to the largest intimal sarcoma treatment series.⁴

France

NETSARC+ is the national network of sarcoma reference centers; any suspected sarcoma should be discussed at one of its boards.¹⁰ Gustave Roussy (Villejuif), Centre Léon Bérard (Lyon) and La Timone (Marseille) contributed to the intimal sarcoma series.⁴

Italy, Netherlands, Poland

Istituto Nazionale dei Tumori (Milan), Campus Bio-Medico (Rome) and Bologna; Leiden and Radboud (Nijmegen); the Maria Skłodowska-Curie Institute (Warsaw) — all contributed to the World Sarcoma Network series.⁴

United States

Look for an NCI-designated cancer center with a sarcoma programme;¹² MD Anderson (Houston), Memorial Sloan Kettering (New York), Dana-Farber (Boston) and the University of Michigan contributed to the intimal sarcoma series.⁴ For pulmonary artery tumours specifically, ask whether the center has a cardiac tumour surgery programme — the best surgical outcomes in the literature come from such dedicated teams.⁵

Japan

The National Cancer Center Hospital (Tokyo) contributed to the World Sarcoma Network series and has one of the larger experiences with this tumour.⁴

Everywhere else

SPAGN, the global network of sarcoma patient organisations, lists member groups by country who can point you to the nearest sarcoma expertise.¹³ And if you write to us, we will try to help you find the right door: contact us.

Ask for a pathology review even if you do not change hospitals

Even if treatment stays where you are, a review of the slides by a sarcoma pathologist — with MDM2 immunohistochemistry or FISH — is cheap, fast and decisive. Intimal sarcoma is regularly mis-labelled as another sarcoma type, or missed altogether in tissue removed for a "clot".⁶ Your treating pathologist can request this from a reference center directly.

Frequently asked