放射治療在何杰金氏症的治療上具有傳統的角色。本文報告一位第二期何杰金氏症接受放射治療後兩個月，左下肺出現腫塊病變，該腫塊位於心臟左外側下緣，並且造成橫隔膜側影的模糊。因為該腫塊的病變位置與一般所認知的因

　　　　　Radiation therapy played a classic role in the radical treatment of localized Hodgkin'sdisease. We described a Hodgkin's disease patient, stage IIA, who was found a left lung mass on achest film 2 months after irradiation. The mass was near the left lower heart border and obliteratedthe left diaphragm silhouette. Because the location was quite different from the commonlyrecognized paramediastinal radiation pneumonitis following mantle-field irradiation, the lesion hasbeen mistakenly interpreted as a recurrent tumor or tuberculoma. After reviewing and comparingthe chest radiograph with the subdiaphragmatic port-film, a diagnosis of radiation pneumonitis dueto spleen irradiation was suspected. Given only symptomatic treatment, the mass spontaneouslyresolved 3 months later. The unusual case highlighted the importance of knowledge of the radiationport arrangement on the correct interpretation of a follow-up chest radiograph in Hodgkin's diseasepatients receiving radiotherapy.