Home   Chapter Home   Jobs   Conferences   Fellowships   Books



Advertisement

Kidney tumor - cysts, children, adult benign

Benign (usually) adult tumors

Leiomyoma


Reviewers: Mandolin Ziadie, M.D. (see Reviewers page)
Revised: 27 March 2012, last major update January 2012
Copyright: (c) 2003-2012, PathologyOutlines.com, Inc.

General
=========================================================================

● Benign tumor of smooth muscle usually located in the cortex or, rarely in the renal capsule (Acta Radiol 2006;47:752)

Clinical features
=========================================================================

● Usually an incidental finding
● Most occur in adults; tumors of significant size are more common in young women

Case reports
=========================================================================

● 57 year old woman (Histol Histopathol 2007;22:883)

Gross images
=========================================================================



Firm circumscribed tumor with a whorled cut surface


28 cm tumor

Micro description
=========================================================================

● Well-circumscribed lesion of benign smooth muscle cells
● Features suggestive of leiomyosarcoma include mitoses, nuclear pleomorphism, necrosis

Micro images
=========================================================================



Leiomyoma

Positive stains
=========================================================================

● Alpha smooth muscle actin, h-caldesmon, calponin, muscle actin, myosin and desmin

Differential diagnosis
=========================================================================

Angiomyolipoma: usually vascular and lipomatous components; positive for melanocytic markers

End of Kidney tumor - cysts, children, adult benign > Benign (usually) adult tumors > Leiomyoma


This information is intended for physicians and related personnel, who understand that medical information is often imperfect, and must be interpreted in the context of a patient's clinical data using reasonable medical judgment. This website should not be used as a substitute for the advice of a licensed physician.

All information on this website is protected by copyright of PathologyOutlines.com, Inc. Information from third parties may also be protected by copyright. Please contact us at copyrightPathOut@gmail.com with any questions (click here for other contact information).