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Revista Portuguesa de Ortopedia e Traumatologia
versão impressa ISSN 1646-2122versão On-line ISSN 1646-2939
Resumo
KARMALI, Samir et al. Volumoso quisto acromioclavicular como apresentação invulgar de rotura massiva da coifa dos rotadores. Rev. Port. Ortop. Traum. [online]. 2018, vol.26, n.3, pp.260-266. ISSN 1646-2122.
Objectives: Synovial cysts of the acromioclavicular (AC) usually occur in the setting of AC arthrosis, or more frequently, as a consequence of massive rotator cuff tears. With the following case report, the authors pretend to presente and discuss an unusual situation. Case report: An 81-year-old male, presented to our outpatient clinic due to a non-traumatic, painless lump on the superior aspect of his right shoulder, with progressive enlargement in the last 2 years. Clinical examination and imagiologic assessment showed a large acromioclavicular joint cyst associated with a massive rotator cuff tear; the patient was submitted to surgical treatment with excision of the lesion; anatomopathological exams confirmed the diagnosis of joint cyst. Discussion: AC joint cysts are rare and sparsely discussed in the literature. Their etiology remains to be clarified, although, one of the types described is thought to be associated with glenoumeral arthrosis with massive rotator cuff tears (cuff arthropathy). In these, the rotator cuff tear allows the passage of large amounts of synovial fluid to the subacromial space, leading the formation of a large cyst. Treatment remains controversial given its rarity. The case should raise awareness for the occurrence of AC synovial cysts as unusual presentations of rotator cuff arthropathy, discussing their etiology, diagnostic and therapeutic approach.
Palavras-chave : Shoulder; acromioclavicular cyst; rotator cuff; cuff tear; arthrophaty.