Skeletal carcinomatosis in endometrial clear cell carcinoma at initial presentation: a case report

Bone metastasis is frequently seen in different solid tissue malignancies. However, it is a very rare entity in endometrial cancers and most of the previous reports were localized to a single bone. To the best of our knowledge, this is the first report of a case with disseminated bone metastasis from endometrial clear cell carcinoma. A 69-year-old, multiparous woman presented with the complaint of postmenopausal bleeding. Diagnostic workup revealed endometrial clear cell carcinoma. After comprehensive surgical staging, the patient was found to be at FIGO stage IIIC. Three weeks after the operation, an intractable back pain developed. Direct graphics of the lumbosacral region were suspicious of metastasis, and further evaluation of the patient revealed metastasis in multiple bones including calvarium, thoracolumbal vertebrae, pelvic bones, costae, collum of the right femur, and trochanter major of the left femur. Bone metastasis in endometrial clear cell carcinoma may be seen at initial presentation and may involve multiple bones. Whole-body scanning with scintigraphic evaluation is a reasonable approach to evaluate the extension of the bone involvement. Further studies are needed to elucidate the true incidence and management of bone metastasis in endometrial clear cell carcinoma.