Autopsy of a man who died from influenza revealed that the heart was slightly enlarged and pastose. The surface of the incision of myocardium appeared to be pale, with specks. Microscopic examination revealed signs of parenchymatous adipose and hydropic degeneration, edematic stroma with scant lymphocytic and macrophage infiltration; plethoric vessels; perivascular petechial hemorrhages. What type of myocarditis is it?

Answer options

1. Serous diffuse
2. Serous focal
3. Interstitial proliferative
4. Granulomatous
5. Purulent

Explanation

Autopsy of a man who died from influenza revealed that the heart was slightly enlarged and pastose. The surface of the incision of myocardium appeared to be pale, with specks. Microscopic examination revealed signs of parenchymatous adipose and hydropic degeneration, edematic stroma with scant lymphocytic and macrophage infiltration; plethoric vessels; perivascular petechial haemorrhages. What type of myocarditis is it?