Kawashima K, Kito Y, Tochii K, Kimura M, Takeda T, Sekino T, Ikeda T, Takeuchi T. A unique case of splenic tumor exhibiting a serous carcinoma phenotype.
SAGE Open Med Case Rep 2021;
9:2050313X211016992. [PMID:
34104444 PMCID:
PMC8155744 DOI:
10.1177/2050313x211016992]
[Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/19/2020] [Accepted: 04/21/2021] [Indexed: 11/17/2022] Open
Abstract
The spleen has no epithelial element; thus, primary carcinoma of the spleen is
quite rare. We present the case of a patient with serous carcinoma of the
spleen. A 76-year-old woman with no significant medical history presented with a
huge lesion in the spleen. Except this lesion, clinical examination, including
imaging examination, revealed no remarkable findings. She underwent excision of
the spleen for treatment and diagnosis. Postoperative pathological examination
revealed neoplastic cells with pleomorphic and hyperchromatic nuclei, prominent
nucleoli, and frequent mitotic activity. The neoplastic cells exhibited a
papillary pattern with psammoma bodies. Immunohistochemistry showed positivity
for cytokeratin 7, PAX-8, WT-1, p16, p53, and Ber-EP4 and negativity for
cytokeratin 20, thyroid transcription factor-1, carcinoembryonic antigen, CD10,
estrogen receptor, calretinin, D2-40, intelectin-1, and sialylated HEG1. We
inferred that this tumor was a primary splenic serous carcinoma. Serous tubal
intraepithelial carcinoma is the plausible origin of most pelvic serous
carcinomas. However, the origin of serous carcinoma of the spleen remains
unknown. We speculated that endosalpingiosis might be the origin of the
tumor.
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