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Cardiac Myxoma B065

Last amended 
18 April 2017
Current RMA Instruments
Reasonable Hypothesis SOP
32 of 2017
Balance of Probabilities SOP
33 of 2017
Changes from previous Instruments

SOP Bulletin 196

ICD Coding:
  • ICD-9-CM Codes: 212.7
  • ICD-10-AM Codes: D15.1
Brief description

Cardiac myxoma is a benign neoplasm of the heart.  They generally arise in the atria.  Cardiac myxomas are extremely rare.  Metastatic cancer involving the heart is far more common.

Confirming the diagnosis

The diagnosis needs to be confirmed by histological evidence.  A cardiac tumour can be identified by imaging (e.g. cardiac ultrasound), but histology is required to confirm the tumour type. 

The relevant medical specialist is a cardiologist or cardiac surgeon.

Additional diagnoses covered by SOP
  • Nil
Clinical onset

Myxomas can be found incidentally or may cause symptoms that can mimic other heart conditions.  Clinical onset will be when a mass, subsequently confirmed to be a myxoma, was first identified, or when symptoms, later attributed to the myxoma, first manifest.

Clinical worsening

The only worsening factor is for inability to obtain appropriate clinical management.  Appropriate treatment generally invoves prompt resection of the tumour.