711 Atypical Presentation of a Ruptured Thyroid Cyst

Abstract

Abstract Introduction Thyroid cysts are a common finding with the bulk of cases being benign and approximately only 5% being malignant. The majority of these cysts are managed conservatively in the absence of malignancy or compressive symptoms. Case presentation A middle-aged female patient presented with sudden onset anterior neck bruising but minimal specific symptomatology. On examination, the patient had bruising around the anterior neck and chest wall. CT and MRI scanning of the neck revealed the bruising was attributed to a ruptured thyroid cyst. On follow up, an ultrasound guided fine-needle aspirate revealed the histology to be inflammatory follicular thyroid tissue. D iscussion The case demonstrated a rare presentation, given the lack of trauma in her history nor the presence of more sinister conditions as demonstrated by the fine-needle aspirate. Normally hemorrhage of thyroid cysts are due to trauma or abnormal thyroid vasculature. There are a few previous case reports of similar presentations where ruptured thyroid cysts led to life-threatening airway compromise requiring intubation. Early recognition of these thyroid cyst complications is crucial. Conclusion Neck and anterior chest wall hematoma can be a sign of thyroid cyst rupture/hemorrhage. It is important to recognize this sign to prevent life-threatening airway compromise.