# The Clinical and Histological Intersection of Cardiac Sarcoidosis and Giant Cell Myocarditis

## TL;DR

This paper presents a case where a heart condition showed features of both cardiac sarcoidosis and giant cell myocarditis, highlighting challenges in diagnosing and managing overlapping diseases.

## Contribution

The case demonstrates an intermediate clinicohistologic phenotype between cardiac sarcoidosis and giant cell myocarditis.

## Key findings

- The patient exhibited heart block and ventricular tachycardia.
- Cardiac MRI, FDG-PET, and biopsy revealed overlapping features of CS and GCM.
- The case highlights diagnostic and management challenges in overlapping cardiac conditions.

## Abstract

The clinical and imaging features of cardiac sarcoidosis (CS) and giant cell myocarditis (GCM) are occasionally indistinguishable. This is a case of heart block and ventricular tachycardia where cardiac MRI, fluorodeoxyglucose positron emission tomography (FDG-PET) and biopsy revealed intermediate clinicohistologic phenotype between CS and GCM. This highlights gaps in the management of overlap conditions.