title: Popliteal cysts and deep venous thrombosis: Tc-99m red blood cell venography.
abstract: Thirty-four patients who clinically were suspected of having deep venous thrombosis (DVT) underwent Tc-99m red blood cell (RBC) venography followed by contrast venography. The sensitivity (88%) and specificity (94%) of Tc-99m RBC venography for DVT confirmed findings of previous studies. Twenty-four patients who had proved popliteal cysts and swollen calves also were examined using Tc-99m RBC venography. Large cysts (greater than 9 X 4 X 4 cm) showed lack of DVT features, photon deficient cold areas in the popliteal fossa, and diversion of venous flow around the photon deficient area. These features were seen in 25% of the study population (six patients), and assisted in the distinction between the two conditions.
authors.forename: G O
authors.initials: GO
authors.lastname: Littlejohn
authors.forename: C A
authors.initials: CA
authors.lastname: Brand
authors.forename: A
authors.initials: A
authors.lastname: Ada
authors.forename: C
authors.initials: C
authors.lastname: Wong
mesh_terms: D000328:Adult; D000368:Aged; D003560:Cysts / Q000000981:diagnostic imaging*; D003937:Diagnosis, Differential; D004912:Erythrocytes; D005260:Female; D006801:Humans; D007717:Knee / Q000000981:diagnostic imaging*; D008297:Male; D008875:Middle Aged; D011152:Popliteal Vein / Q000000981:diagnostic imaging; D011877:Radionuclide Imaging; D013670:Sodium Pertechnetate Tc 99m; D013924:Thrombophlebitis / Q000000981:diagnostic imaging*
chemical_list: D013670:Sodium Pertechnetate Tc 99m