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mesothelial hamartoma

Thursday 11 June 2009


- congenital, solitary, yellowish-red, eroded tumor on the scalp
- ectopic proliferation of vascular and meningothelial elements
- mature connective-tissue elements
- adipose tissue
- smooth-muscular fibers
- characteristic histopathological features of a nevus sebaceus
- areas with immature glandular differentiation

Differential diagnosis

- angiosarcoma (2403758)


- Congenital hamartoma of the scalp with meningothelial, sebaceus, muscular, and immature glandular components. Ferran M, Trib├│ MJ, Gonz├ílez-Rivero MA, Alameda F, Pujol RM. Am J Dermatopathol. 2007 Dec;29(6):568-72. PMID: 18032955

- Meningothelial hamartoma located in the forehead. Di Tommaso L, Fortunato C, Eusebi V. Virchows Arch. 2003 May;442(5):509-10. PMID: 12692725

- Meningothelial hamartoma of the scalp. A case report with immunohistochemical studies. Gottschalk J, Jautzke G, Sprung C, Schreiner C, Riebel T. Zentralbl Pathol. 1992 Nov;138(5):355-61. PMID: 1282366

- Hamartoma of the scalp with ectopic meningothelial elements. A distinctive benign soft tissue lesion that may simulate angiosarcoma. Suster S, Rosai J. Am J Surg Pathol. 1990 Jan;14(1):1-11. PMID: 2403758