ARRS 2022 Abstracts

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E1698. 11 Signs of Sarcoidosis
Authors
  1. Fernando Rivera-Melendez; Universidad Central del Caribe
  2. Jose Rodrigez-Vazquez; Nebraska Medical Center
  3. Daniel Alvarez-Vega; Universidad Central del Caribe
  4. Shelby Schelkopf; Nebraska Medical Center
  5. Luis Calimano-Ramirez; Universidad Central del Caribe
  6. Fabiola Guasp-Reyes; University of Puerto Rico School of Medicine
  7. Neil Hansen; Nebraska Medical Center
Background
When it comes to visual recognition and description providing a significant portion of medical information, radiology is considered one of the most metaphorical specialties. The descriptions radiologists provide require a certain amount of ingenuity and creativity. A clear example of this has been the use and association of radiology signs to normal and abnormal imaging findings. Since the first example of a radiology sign was published in 1918, the use of radiology signs has formed a significant part of the nomenclature and history, though to a much lesser degree in recent years as objective and analytical descriptions have become the norm. Nonetheless, as evidenced throughout the field's history, radiology signs have been used as a captivating force, whereby both interest in and memory of a particular subject can be enhanced. Our main objective is to present cases of common and uncommon presentations of sarcoidosis, to review their distinctive radiology findings, and to discuss and remember the radiology signs that have been associated with them.

Educational Goals / Teaching Points
Cases will be presented with a brief medical history and relevant radiologic studies. The viewer will then be asked to describe and explain the relevant imaging findings. Afterwards, a multiple-choice question will test the viewer on the signs being presented. Finally, the sign will then be revealed with additional information pertaining to the sign and the case. Eleven radiology signs will be presented, including tongues of fire sign; cluster of black pearls sign; galaxy sign; panda sign; donut sign; lambda sign; 1-2-3 sign; and beaded septum sign, among others.

Key Anatomic/Physiologic Issues and Imaging Findings/Techniques
The primary organ system in which pathology will be presented is the thorax, but brain as well as head and neck cases will be presented as well. These will be presented utilizing plain radiography, CT, nuclear medicine, and MRI.

Conclusion
Sarcoidosis is a fascinating multisystem disease with a wide range of radiographic manifestations. We hope that this educational exhibit serves to review the classical and distinctive radiographic findings of sarcoidosis across several organ systems and imaging modalities, but also to review an important part of radiology history, which has been the use of metaphorical signs to help spark interest and remembrance of said radiographic findings.