Recurrent invasive lobular breast carcinoma presenting as gastric outlet obstruction

Breast cancer is the most common malignancy in women. Metastatic disease is usually found in the bones, lungs, regional lymph nodes, liver, and brain. Metastases to the gastrointestinal tract occur in less than 1% of cases. We report an unusual case of metastatic invasive lobular carcinoma presenting as gastric outlet obstruction seven years after the initial diagnosis. To our knowledge, this is the first time that endoscopic ultrasound with fine-needle aspiration is used to establish a definite diagnosis of recurrent invasive lobular carcinoma to the gastrointestinal tract causing gastric outlet obstruction.