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Pleural effusion cytology of embryonal rhabdomyosarcoma

✍ Scribed by Karen S. Thompson; JoAnn D. Jensen; Nirmala Bhoopalam; Cesar V. Reyes

Publisher: John Wiley and Sons
Year: 1997
Tongue: English
Weight: 337 KB
Volume: 16
Category: Article
ISSN: 8755-1039
DOI: 10.1002/(sici)1097-0339(199703)16:3<270::aid-dc16>3.0.co;2-i

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✦ Synopsis

This case report concerns an embryonal rhabdomyosarcoma of the testis in a 31-yr-old white male patient who underwent radical left orchiectomy, followed by combined irradiation and chemotherapy, and who 2 yr later presented with dyspnea at rest, nonproductive cough, and lower back pain for 1 wk. Chest radiographs demonstrated a bilateral pleural effusion and diffuse infiltrating lesion of the pleurae, mimicking a mesothelioma. The pleural fluid displayed noncohesive, malignant, small, round cells about 2-5 times larger than mature lymphocyes. They had large, darkly staining, pleomorphic nuclei and bubbly cytoplasm with poorly defined borders. The diagnosis of embryonal rhabdomyosarcoma was supported by a positive myosin immunostaining and ultrastructural findings of intracytoplasmic actin and myosin-type microfilaments. Our case is also notable in that the tumor was a pure rhabdomyosarcoma involving a testicular origin, and the patient is the oldest reported in the literature.

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