Garbelotti Junior Silvio Antonio, Rocha Paulo Ricardo, Liquidato Bianca Maria, Marques Sérgio Ricardo, Arráez-Aybar Luis Alfonso, de Moraes Luís Otávio Carvalho
Disciplina de Anatomia Descritiva e Topográfica, Departamento de Morfologia e Genética, Universidade Federal de São Paulo, Escola Paulista de Medicina, Edifício Leitão da Cunha (térreo), Rua Botucatu, 740, Vila Clementino, São Paulo, SP, 04023-062, Brazil.
Departamento de Morfologia, Faculdade de Ciências Médicas da Santa Casa de São Paulo, São Paulo, Brazil.
Surg Radiol Anat. 2019 May;41(5):539-542. doi: 10.1007/s00276-018-2174-2. Epub 2019 Jan 2.
The cricoid cartilage serves as an anatomical reference for several surgical procedures for access to the airway. Additionally, it serves as an attachment point for muscles that move the vocal folds. We present a case where the cricoid cartilage arch is divided into distinct superior and inferior arches, with a fibrous membrane between them. We did not find any similar description to this case in the literature, which makes it unique to date. This type of variation is important knowledge for clinicians and surgeons during airway management in the anterior neck region. The presence of this variation could induce an error during a palpation of the thyroid and cricoid cartilages, realized in clinical examination and surgical or emergency procedures.
环状软骨是多种气道手术入路的解剖学参考标志。此外，它还是使声带运动的肌肉的附着点。我们报告一例环状软骨弓分为明显的上弓和下弓且两者之间有纤维膜的病例。我们在文献中未发现与此病例类似的描述，这使得该病例至今独一无二。这种变异类型对于临床医生和外科医生在前颈部区域进行气道管理来说是重要的知识。在临床检查以及外科手术或急诊手术过程中触诊甲状腺和环状软骨时，这种变异的存在可能会导致误诊。
