Supplementary Material for: Intra-abdominal paraganglioma and primary thyroid lymphoma in a single patient: the first case report

Rare diseases such as primary thyroid lymphoma (PTL) and paragangliomas exist. Although only 0.5% of patients experience a transformation from thyroiditis to PTL, patients with Hashimoto's thyroiditis have a higher risk of developing PTL than the general population. Primary non-Hodgkin lymphoma of the thyroid is rare. Paragangliomas are neuroendocrine tumors that originate from chromaffin cells situated along the sympathetic and parasympathetic chains. This paper reports the first case of primary diffuse large B-cell lymphoma with nonfunctional paraganglioma. A 29-year-old female, presented with an enlarged neck and recurring compressive symptoms. Ultrasonography (US) results showed a nodule in the right lobe of the thyroid gland. Emergency thyroidectomy was performed after obtaining inconclusive fine-needle aspiration (FNA) results. Immunohistopathology of the biopsy specimen confirmed the presence of a large diffuse B-cell lymphoma. Computed tomography revealed a non-functional mass in the adrenal gland. The team then proceeded with the appropriate treatment.