Primary thyroid lymphoma is rare. We describe the case of a 65-year-old woman with Hashimoto’s thyroiditis who presented a 12-month history of neck swelling. Our investigation revealed the presence of a Diffuse Large B-Cell Lymphoma of the thyroid which accounts for 50 to 80% of thyroid primary lymphomas.

Pseudoachalasia is an uncommon disorder, mainly caused by malignancy. To our knowledge, no cases of a signet-ring cell carcinoma of the non-ampullary duodenum revealed by pseudoachalasia were previously reported. Early identification of malignancy-associated pseudoachalasia is crucial to avoid delaying adequate treatment.