A 67-year-old man developed upper abdominal pain and went to a clinic. A barium enema examination and upper gastrointestinal endoscopy showed no abnormalities between the esophagus and the duodenum. However, because blood tests indicated anemia, jejunal capsule endoscopy was performed, and it showed a tumor with ulceration in the proximal jejunum. Seven days passed after ingestion of the capsule, however, there was no sign of capsule excretion. Additionally, the patient began to suffer from upper abdominal pain and vomiting and consulted the clinic. After conservative treatment for several days, an abdominal CT scan showed that there was no possibility of natural excretion of the capsule due to constriction by the tumor, and the patient was referred to our hospital. Laparoscopic-assisted partial jejunectomy was performed to retrieve the capsule 17 days after it was swallowed. Intraoperative findings showed that there was a tumor reaching the serosal membrane located at the jejunum 20 cm from the Treitz ligament. The capsule existed at the oral side from the tumor. The jejunum was clamped in advance to prevent the capsule from falling into the oral side, and the capsule was collected with the resected jejunum, including the tumor.