Telangiectatic osteosarcoma initially presenting as right popliteal vein thrombosis in pregnancy: A case report

Abstract

Background: Telangiectatic Osteosarcoma (TO) is a rare variant of osteosarcoma. The rarity of TO and its similar initial presentation with Deep Vein Thrombosis (DVT) often leads to missed diagnosis or misdiagnosis during the primary evaluation.
Case presentation: A 30-year-old Para 1+0 Gravida 2 presented with right lower limb swelling with knee effusion, right lower leg thrombosis, and TO at 30 weeks gestation to the Kenyatta National Hospital (KNH). Serial limb measurements, analgesics for lower limb pain, fetal heart rate, and movement monitoring were done. Disarticulation at the hip joint was scheduled, but the case declined further care, opting for expectant management. She had an intrauterine fetal demise and delivered a macerated stillbirth at 31 weeks of gestation. She was admitted for one day in the labor ward, discharged, and was lost to follow-up.
Conclusion: Telangiectatic osteosarcoma can present as right popliteal vein thrombosis.