Diffuse Alveolar Septal Amyloidosis With Wild-Type Transthyretin With Spontaneous Lung Hematoma.

Tomita, Emiko; Matsuo, Shohei; Tsukamoto, Yoshitane; Fukuhara, Kenjiro; Akashi, Akinori · Ann Thorac Surg · 2019

case_report · Level V

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Abstract

We experienced a mass formation in the right lower lobe in a patient with cardiac amyloidosis and heart failure. Radiologic findings of the chest showed no abnormality except a mass. The patient had non-valvular atrial fibrillation and was taking edoxaban. Surgical resection of the mass revealed a hematoma. Further pathologic evaluation revealed diffuse alveolar septal amyloidosis with transthyretin (ATTR). The genetic testing found no mutation in the TTR gene. Therefore, systemic wild-type TTR amyloidosis (ATTRwt) was confirmed. Alveolar septal ATTRwt is rare and patient had alveolar septal ATTRwt with spontaneous lung hematoma.

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