Cytologic and histologic features of COVID-19 post-vaccination lymphadenopathy.

In this study, we present six cases of axillary or supraclavicular lymphadenopathies in the days following to the Pfizer-BioNTech vaccine's first dose and its study for fine-needle aspiration cytology (two patients), biopsy with a gross needle (two patients), and the evolution of two other patients. Cytological smears and histological sections reveal reactive nodes, predominantly T, CD8, and the presence of atypia with striking mitosis. Differential diagnosis with viral lymphadenopathies and lymphoma is important, so the clinical correlation, in a vaccination context, sudden appearance, and progressive decrease in days of the adenopathy, is essential. In this article, we have studied the cytohistological manifestations of post-Pfizer-BioNTech vaccination lymphadenopathy and discussed its differential diagnosis.

Oropharyngeal approach as a surgical alternative for cervical lymphatic malformation with airway compression.

Cervical lymphatic malformation is an infrequent benign congenital malformation of the lymphatic system, whose rapid growing capacity can compromise the airway. Here we present a 3-month-old male with severe respiratory impairment showing pharyngeal, cervical and mediastinal lymphatic malformation. Transoral surgery maintaining the mucosa allowed removal of numerous cystic lumps occupying the whole pharynx up to the pyriform sinus, surrounding the common carotid artery. Postsurgical MRI showed that the pharynx portion of the lymphatic malformation had disappeared. We conclude that the oropharyngeal approach is an alternative to the classical external surgery involving upper respiratory tract compression.