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Perigastric solitary fibrous tumor (SFT) diagnosed on fine needle aspiration: A case report and review of literature.
Diagn Cytopathol. 2020 Jul 06 [Online ahead of print]DC

Abstract

Solitary fibrous tumor (SFT) is a mesenchymal tumor initially described in the pleura. When the tumor is located in the pleura and the classic histologic findings are present, the diagnosis of SFT can be straightforward. However, the cytologic diagnosis of perigastric SFT can be challenging due its rarity with only one cytology case report. Another confounding factor is its potential mimicry with other perigastric/gastric mesenchymal tumors. Herein, we report a case of perigastric SFT diagnosed on cytology in conjunction with immunohistochemical stains. The patient is a 79-year-old woman who presented with an enlarging perigastric mass on computerized tomography scan which was highly concerning for a saccular aneurysm. Endoscopic ultrasound (EUS) revealed a 6.6 cm hypoechoic lesion abutting the stomach. An EUS-guided fine needle aspiration was performed. The smears showed singly scattered to clusters of bland spindle cells with scant cytoplasm dispersed in a bloody background. The cell block showed similar spindle cells focally supported by a collagenized stroma. Immunohistochemical stains performed on the cell block showed the tumor cells were positive for CD34, BCL2, and STAT6 and negative for CD117, DOG1, CD31, ERG-ENDO, AE1/AE3, S-100, desmin, and synaptophysin, supporting the diagnosis of solitary fibrous tumor.

Authors+Show Affiliations

Cleveland Clinic, Cleveland, Ohio, USA.Cleveland Clinic, Cleveland, Ohio, USA.

Pub Type(s)

Journal Article

Language

eng

PubMed ID

32628336

Citation

Ababneh, Emad, and Maria Luisa C. Policarpio-Nicolas. "Perigastric Solitary Fibrous Tumor (SFT) Diagnosed On Fine Needle Aspiration: a Case Report and Review of Literature." Diagnostic Cytopathology, 2020.
Ababneh E, Policarpio-Nicolas MLC. Perigastric solitary fibrous tumor (SFT) diagnosed on fine needle aspiration: A case report and review of literature. Diagn Cytopathol. 2020.
Ababneh, E., & Policarpio-Nicolas, M. L. C. (2020). Perigastric solitary fibrous tumor (SFT) diagnosed on fine needle aspiration: A case report and review of literature. Diagnostic Cytopathology. https://doi.org/10.1002/dc.24544
Ababneh E, Policarpio-Nicolas MLC. Perigastric Solitary Fibrous Tumor (SFT) Diagnosed On Fine Needle Aspiration: a Case Report and Review of Literature. Diagn Cytopathol. 2020 Jul 6; PubMed PMID: 32628336.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - Perigastric solitary fibrous tumor (SFT) diagnosed on fine needle aspiration: A case report and review of literature. AU - Ababneh,Emad, AU - Policarpio-Nicolas,Maria Luisa C, Y1 - 2020/07/06/ PY - 2020/05/02/received PY - 2020/06/14/revised PY - 2020/06/22/accepted PY - 2020/7/7/entrez KW - STAT 6 KW - fine needle aspiration cytology KW - perigastric KW - solitary fibrous tumor JF - Diagnostic cytopathology JO - Diagn. Cytopathol. N2 - Solitary fibrous tumor (SFT) is a mesenchymal tumor initially described in the pleura. When the tumor is located in the pleura and the classic histologic findings are present, the diagnosis of SFT can be straightforward. However, the cytologic diagnosis of perigastric SFT can be challenging due its rarity with only one cytology case report. Another confounding factor is its potential mimicry with other perigastric/gastric mesenchymal tumors. Herein, we report a case of perigastric SFT diagnosed on cytology in conjunction with immunohistochemical stains. The patient is a 79-year-old woman who presented with an enlarging perigastric mass on computerized tomography scan which was highly concerning for a saccular aneurysm. Endoscopic ultrasound (EUS) revealed a 6.6 cm hypoechoic lesion abutting the stomach. An EUS-guided fine needle aspiration was performed. The smears showed singly scattered to clusters of bland spindle cells with scant cytoplasm dispersed in a bloody background. The cell block showed similar spindle cells focally supported by a collagenized stroma. Immunohistochemical stains performed on the cell block showed the tumor cells were positive for CD34, BCL2, and STAT6 and negative for CD117, DOG1, CD31, ERG-ENDO, AE1/AE3, S-100, desmin, and synaptophysin, supporting the diagnosis of solitary fibrous tumor. SN - 1097-0339 UR - https://www.unboundmedicine.com/medline/citation/32628336/Perigastric_solitary_fibrous_tumor_(SFT)_diagnosed_on_fine_needle_aspiration:_A_case_report_and_review_of_literature L2 - https://doi.org/10.1002/dc.24544 DB - PRIME DP - Unbound Medicine ER -
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