Multifocal Calcifying Fibrous Tumor at Seven Intrathoracic Sites in One Patient

Multiple calcifying fibrous tumors from gastric and retroperitoneal tissue: A case report

INTRODUCTION AND IMPORTANCE

Calcifying fibrous tumor (CFT) is a rare benign mesenchymal lesion that has been occurred in the gastrointestinal tract, especially occurs most commonly in the stomach and the small and large intestines.

CASE PRESENTATION

74-year-old woman was admitted to our hospital with complaints of epigastric discomfort. Whole-body computed tomography (CT) revealed a 2.2-cm mass with a 1.2-cm low-density area at the anterior wall in the gastric cardia and lesser omentum; however, no abnormal uptake at the same site was noted on positron emission tomography (PET). We performed laparoscopic tumor resection of the two sites. The postoperative course was good without complications. Histopathological findings revealed collagen fibrous granulation connective tissue and psammomatous calcification. Subsequently, the patient has been relapse-free for 6 months.

CLINICAL DISCUSSION

CFT is a rare benign tumor that commonly occurs in soft tissues, such as the subcutaneous extremities and neck. In particular, development from the stomach and lesser omentum has never been reported. Our case was incidentally found on a general examination. In our case, CT showed a low-density area, MRI showed a low-intensity area, and PET examination showed no uptake; it was difficult to establish a preoperative diagnosis. Therefore, in our case, laparoscopic tumor resection was performed, with GIST as the differential diagnosis.

CONCLUSIONS

We herein reported a rare gastric and lesser omentum CFT that was successfully treated by laparoscopic surgery. For curative treatment of CFT, complete surgical resection is necessary.

Multiple calcifying fibrous tumor of the pleura: A case report

Calcifying fibrous tumor of the pleura (CFTP) is a rare benign tumor of the thoracic cavity. Due to the low incidence of CFPT, it is prone to be misdiagnosed because intraoperative analysis of frozen section is a challenge for pathologists. At present, it is difficult to distinguish this tumor from other benign thoracic tumors based on radiographic features. Therefore, surgical resection is the best method for definite diagnosis and treatment.