Ribeiro EA, Harvey S, Wakely PE, Ali SZ. Metastatic salivary gland neoplasms to pleural effusion: diagnostic challenges and prognostic significance in a series with 9 patients.
J Am Soc Cytopathol 2022;
11:359-367. [PMID:
36123248 DOI:
10.1016/j.jasc.2022.07.166]
[Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/25/2022] [Revised: 06/17/2022] [Accepted: 07/25/2022] [Indexed: 06/15/2023]
Abstract
INTRODUCTION
Pleural effusions can present a diagnostic challenge as they are not always caused by malignancy in patients with a history of typical visceral primaries.
MATERIAL AND METHODS
At 2 major academic medical centers, we have identified several cases in which salivary gland neoplasms metastasized to pleural effusions in patients who have been aggressively managed with various treatment modalities including chemotherapy, radiation, and/or surgical excision.
RESULTS
Herein, we present a range of primary salivary gland tumors that metastasized to serous effusions and characterize their cytomorphology, immunoprofiles, and clinical courses. Our case series shows that many tumor types metastasize to pleural effusions and they present unique diagnostic challenges in each case. We found that metastasis of a salivary gland neoplasm to a pleural effusion is a late-stage event and is often associated with poor prognosis.
CONCLUSIONS
This series serves as a resource to demonstrate the cytomorphologic and immunohistochemical features of malignant pleural effusions due to salivary gland neoplasms and draws attention to poor prognosis in cases of salivary duct carcinoma, mucoepidermoid carcinoma and adenoid cystic carcinoma.
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