RT Journal Article SR Electronic T1 Saddle pulmonary embolus and bronchiolitis obliterans with organizing pneumonia develop simultaneously after first cyclophosphamide, methotrexate, 5FU chemotherapy for breast cancer JF Saudi Medical Journal JO Saudi Med J FD Prince Sultan Military Medical City SP 747 OP 750 DO 10.15537/smj.2015.6.11305 VO 36 IS 6 A1 Al-Hameed, Fahad M. YR 2015 UL http://smj.org.sa/content/36/6/747.abstract AB A 62-year-old woman underwent a right mastectomy with axillary node dissection for a poorly differentiated ductal carcinoma. One month later, she underwent a left nephrectomy for a renal cell carcinoma. Two weeks after, she received her first cycle of cyclophosphamide, methotrexate, and 5FU (CMF) as a part of her breast cancer treatment. We describe an unusual case of non-occlusive saddle pulmonary embolus with extensive bilateral deep vein thrombosis and severe bronchiolitis obliterans with organizing pneumonia developing simultaneously after the first CMF chemotherapy for breast cancer.