ABSTRACT
We herein report a case of a pulmonary metastatic tumor with an endobronchial growth pattern. A 75-year-old female was operated on for pulmonary metastasis which originated from a malignant melanoma of the upper gum. Computed tomography (CT) of the chest demonstrated a solitary mass in right S6 region and a preoperative bronchoscopic examination revealed an endobronchial tumor in rtB6b. A retrospective analysis of the chest CT showed a thickened bronchial wall extending to the entrance of rtB6b. Therefore, not a wedge resection but a segmentectomy (rtS6) was performed. When the surgical margin is determined, we should therefore keep in mind the possibility of an endobronchial growth pattern if only a solitary mass is recognized on the CT, even though pulmonary metastatic tumors showing an endobronchial growth pattern is uncommon.
Subject(s)
Lung Neoplasms/secondary , Melanoma/secondary , Aged , Bronchi/pathology , Bronchography , Female , Gingival Neoplasms/pathology , Humans , Lung Neoplasms/diagnostic imaging , Lung Neoplasms/surgery , Melanoma/diagnostic imaging , Melanoma/surgery , Tomography, X-Ray ComputedABSTRACT
We present a case of thymoma arising in the wall of the thymic cyst. A 77-year-old asymptomatic woman demonstrated an approximately 3.5 cm sized cystic mass in the left anterior mediastinum in the CT scan. The tumor was extirpated by a total thymectomy. Histologically, the cyst wall was lined by low cuboidal cells, but a markedly thickened wall was observed at the upper site of the mass, which was found to be thymoma. These findings may suggest that the thymoma originated from the wall of the thymic cyst.
