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Calcified Amorphous Tumor of the Heart (CAT)


Dr Sampurna Roy MD      



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Calcified amorphous tumor of the heart (cardiac CAT) are nonneoplastic cardiac lesions. Reynolds et al proposed the descriptive name in 1997 based on the clinical presentation and microscopic features.

Macroscopically, the lesions are firm, yellow-white, partly calcified and may be located in any of the four chambers.

Histologically, all lesions show by nodular calcium in a background of degenerating blood elements and chronic inflammation.

These benign lesions represent old organized and focally calcified mural thrombus and should be distinguished from calcified benign or malignant neoplasms of the heart.


Further reading:

Cardiac calcified amorphous tumor in a hemodialysis patient.

Calcified amorphous tumor of the heart: case report and review of the literature.

Calcified amorphous tumor of the heart (cardiac CAT).

Fatal outcome of a calcified amorphous tumor of the heart (cardiac CAT).

Calcified right ventricular mass and pulmonary embolism in a previously healthy young woman.


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Dr  Sampurna Roy  MD

Consultant Histopathologist (Kolkata - India)






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