Inflammatory pseudotumor of the spleen concomitant with renal cell carcinoma

case report

Authors

  • Sérgio Ossamu Ioshii Hospital de Clínicas, Universidade Federal do Paraná
  • Danielle Giacometti Sakamoto Hospital de Clínicas, Universidade Federal do Paraná
  • Tiago Noguchi Machuca Hospital de Clínicas, Universidade Federal do Paraná
  • Ryuichi Yatani Mie University School of Medicine

Keywords:

Spleen, Plasma cell granuloma, Renal cell carcinoma, Immunohistochemistry, Neoplasms

Abstract

CONTEXT: Inflammatory pseudotumor is a rare benign lesion that can occur at a wide variety of primary sites. It is usually worrisome for the patient and the medical staff, since it cannot be clinically or radiologically distinguished from malignant entities. CASE REPORT: We report on a case of splenic inflammatory pseudotumor presenting with concomitant renal cell carcinoma. Despite the alarming macroscopic appearance of pseudotumors, their microscopic features usually confirm the inflammatory nature of such lesions. Evidence regarding the etiology of pseudotumors is still lacking, but hypotheses have been created.

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Author Biographies

Sérgio Ossamu Ioshii, Hospital de Clínicas, Universidade Federal do Paraná

Pathologist, adjunct professor of Anatomical pathology, Hospital de Clínicas, Universidade Federal do Paraná, Curitiba, Brazil.

Danielle Giacometti Sakamoto, Hospital de Clínicas, Universidade Federal do Paraná

Resident in Anatomical Pathology, Hospital de Clínicas, Universidade Federal do Paraná, Curitiba, Brazil.

Tiago Noguchi Machuca, Hospital de Clínicas, Universidade Federal do Paraná

Medical student, Universidade Federal do Paraná, Curitiba, Brazil.

Ryuichi Yatani, Mie University School of Medicine

Pathologist, professor of Pathology, Mie University School of Medicine, Mie, Japan.

References

Monteforte-Muñoz H, Ro JY, Manning JT, et al. Inflammatory pseudotumor of the spleen. Report of two cases with a review of the literature. Am J Clin Pathol. 1991;96(4):491-5.

Variami E, Terpos E, Vgenopoulou S, Kanellopoulou G, Meletis J. Inflammatory pseudotumor of the spleen: a case report and review of the literature. Ann Hematol.1999;78(12):560-3.

Franquet T, Montes M, Aizcorbe M, Barberena J, Ruiz De Azua Y, Cobo F. Inflammatory pseudotumor of the spleen: ultrasound and computed tomographic findings. Gastrointest Radiol. 1989;14(2):181-3.

Suster S, Moran CA, Blanco M. Mycobacterial spindle-cell pseudotumor of the spleen. Am J Clin Pathol. 1994;101(4):539-42.

Thomas RM, Jaffe ES, Zarate-Osorno A, Medeiros LJ. Inflam- matory pseudotumor of the spleen. A clinicopathologic and immunophenotypic study of eight cases. Arch Pathol Lab Med. 1993;117(9):921-6.

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Published

2004-09-09

How to Cite

1.
Ioshii SO, Sakamoto DG, Machuca TN, Yatani R. Inflammatory pseudotumor of the spleen concomitant with renal cell carcinoma: case report. Sao Paulo Med J [Internet]. 2004 Sep. 9 [cited 2025 Jun. 14];122(5):217-9. Available from: https://periodicosapm.emnuvens.com.br/spmj/article/view/2534

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Section

Case Report