Liver and intrahepatic bile ducts
A neoplasm with perivascular epithelioid cell differentiation often associated with tuberous sclerosis. It is characterized by a mixture of epithelioid cells, smooth muscle, vessels, and mature adipose tissue. It is currently regarded as a tumour of perivascular epithelioid cells (PEComa) exhibiting dual myomatous and lipomatous differentiation and melanogenesis
Martignoni G, Pea M, Reghellin D, Zamboni G, Bonetti F (2008)
PEComas: the past, the present and the future.
Virchows Arch 452: 119-32
Tsui WM, Colombari R, Portmann BC, Bonetti F, Thung SN, Ferrell LD, Nakanuma Y, Snover DC, Bioulac-Sage P, Dhillon AP (1999)
Hepatic angiomyolipoma: a clinicopathologic study of 30 cases and delineation of unusual morphologic variants.
Am J Surg Pathol 23: 34-48
Bosman FT, Carneiro F, Hruban RH, Theise ND (Eds.)
. The kidney is the most common site of involvement
WHO Classification of Tumours of the Digestive System.
International Agency for Research on Cancer: Lyon 2010
Eble JE, Sauter G, Epstein JI, Sesterhenn IA (Eds.)
. Other sites of involvement include the liver, lung, lymph nodes, and retroperitoneum. The vast majority of cases follow a benign clinical course. However, cases of metastatic angiomyolipomas with sarcomatoid features have been described.
World Health Organization Classification of Tumours. Pathology and Genetics of Tumours of the Urinary System and Male Genital Organs.
IARC Press: Lyon 2004