1. Primary localized pharyngeal amyloidosis.
- Author
-
Torquato de Aquino, Ana Virgínia, Nascimento Pereira, Lucas Carneiro, Almeida Brandão Lino, Gabriela Maia, Nita Watanabe, Luciana Miwa, Camillo Pereira, Alisson Leandro, Lima Valente, André, and Trindade Viana, Sávia Moura
- Subjects
CARDIAC amyloidosis ,AMYLOIDOSIS ,IMMUNOGLOBULIN light chains ,EUSTACHIAN tube ,CONGO red (Staining dye) ,AMYLOID plaque - Abstract
Introduction: Amyloidosis is a rare clinical entity characterized by the extracellular deposition of insoluble proteins. Most patients have multi-organ involvement, while localized amyloidosis accounts for only 10-20% of cases. Among localized ones, 61% of head and neck manifestations are located in the larynx, with rhinopharynx involvement being rare (3%). Objective: To report an unusual case of oropharyngeal and nasopharyngeal amyloidosis with clinical repercussions. Resumed report: Male patient, 46 years old, referred to otolaryngology due to an oropharyngeal lesion, presenting sensation of fullness in the left ear, mild hoarseness and snoring. Physical examination showed a yellowish, polypoid, lobulated, sessile-based lesion on left posterolateral wall of the oropharynx. In addition, there were smaller, similar-looking lesions in the rhinopharynx, posteriorly to the Eustachian tube, and on the laryngeal surface of the epiglottis. A biopsy of the oropharyngeal lesion was performed, stained with Congo red and resulting positive for a lambda-type immunoglobulin light chain amyloid deposit. Chest tomography without findings of amyloidoses and neck tomography with description of an rhinopharynx elongated image measuring 36 mm in its longest axis. Cardiovascular and kidney exams without change. The patient remains under clinical follow-up while waiting for surgical resection. Conclusion: Although amyloidosis localized at pharynx are rare, the differential diagnosis must be considered when examining this region. There is no evidence suggesting a progression from untreated localized amyloidosis to systemic disease. However, there is an ongoing debate between surgical excision and a wait-and-see approach. [ABSTRACT FROM AUTHOR]
- Published
- 2022