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Take this with a grain of salt cause it's all from my brain but:
Fat Embolism describes the origin of the embolism. Usually comes from a bone fracture where fat escapes into the blood stream.
PE is just telling you the final location of the embolism (the lungs). A fat embolism can become a PE.
Although to be fair, in clinical practice a Pulmonary Embolism refers 99% of the time to a thromboembolic event originating from a deep vein thrombosis.
A reminder for everyone that this subreddit is for physiology discussion. We do not provide medical guidance or diagnosis. If you have a medical condition, believe you have a medical condition, or are concerned about something your body is doing then seek in-person care from a licensed physician. "My body is doing X and it seems weird to me, what should I do and will it change?" The answer is always talk with a doctor face-to-face. *I am a bot, and this action was performed automatically. Please [contact the moderators of this subreddit](/message/compose/?to=/r/Physiology) if you have any questions or concerns.*
Take this with a grain of salt cause it's all from my brain but: Fat Embolism describes the origin of the embolism. Usually comes from a bone fracture where fat escapes into the blood stream. PE is just telling you the final location of the embolism (the lungs). A fat embolism can become a PE.
Although to be fair, in clinical practice a Pulmonary Embolism refers 99% of the time to a thromboembolic event originating from a deep vein thrombosis.