Radiographic appearance of the chest following therapy for Hodgkin disease

This study was carried out to define the post-treatment appearance of the c hest radiographs in 44 consecutive patients with Hodgkin disease who receiv ed mantle irradiation with or without chemotherapy and to determine how the incidence and severity of post-treatment abnormalities relate to the radia tion parameters and chemotherapeutic regimens. Radiographs of the chest in 44 patients. computed tomograms of the chest in 31 patients and of the abdo men of 35 patients were reviewed, prior to and following treatment, for med iastinal contours, pericardial status, cardiac size and pulmonary fibrosis. All patients were followed for a minimum of 1 year and 17 were followed fo r mure than 5 years. Stable post-treatment imaging studies were correlated with the initial extent of disease. radiation parameters, and chemotherapeu tic regimens. Stable post-treatment findings were categorised as follows: t he chest radiograph was normal or showed subtle vascular reorientation; mod erate paramediastinal fibrosis was present; severe pulmonary fibrosis had o ccurred with narrowing of. the cardiomediastinal silhouette in some patient s. In general, the severity of the fibrosis was dependent on (1) the size o f the radiation fields and on whether or not the coverage of the hila inclu ded a 1- to 2-cm margin. (2) the amounts of chemotherapy and particularly b leomycin containing regimens and (3) individual susceptibility of normal ti ssue irradiation. Therapy for Hodgkin disease is not necessarily associated with radiographic sequelae regardless of the initial status of the mediast inum or the treatment. However, the post-treatment appearance of the chest radiographs in this study was related strongly to (1) the initial extent of disease and particularly the status of the hila, both of which influenced the amounts of lung parenchyma that were included in the treatment fields: (2) the use of bleomycin In chemotherapy regimens and (3) individual normal tissue radiosensitivity. (C) 2000 Elsevier Science Ireland Ltd, All rights reserved.