Breast Metastases From Primary Leiomyosarcoma

Abstract

Two cases of metastatic leiomyosarcoma of the breast are presented. The reasons why they are considered as secondary tumours and not primary tumours are also discussed.

Metastasis to the breast from extramammary malignancies: a report of four cases and a review of literature

“…Our primary sources of breast metastasis were: non-Hodgkin's lymphoma; uterine leiomyosarcoma; Merckel cell carcinoma; and intestinal stromal sarcoma. Two previous studies had reported breast metastasis arising from primary leiomyosarcoma similar to our case 2 [11,13], but the uterine origin has not been previously reported, although histological confirmation of primary tumour in our case 2 is not available. One case report [12] described a Merckel cell carcinoma metastatic to the breast similar to our case 3.…”

Les métastases mammaires : étude anatomoclinique de six cas

“…La bilatéralité est rapportée dans 28 % des cas. Les sarcomes, et plus particulièrement les leiomyosarcomes, donnent rarement des métastases mammaires, à notre connaissance seulement neuf cas ont été publiés dont quatre cas étaient d'origine utérine [1,3,4,14,16,18,19]. Le choriocarcinome est également rarement à l'origine de métastase mammaire, en effet seulement dix cas ont été déjà rapportés [3,12,13,[20][21][22], dans un seul cas la méta-stase était révélatrice du choriocarcinome [21].…”

FNA diagnosis of retroperitoneal leiomyosarcoma metastasizing to the breast

“…There are only eight reported cases of leiomyosarcomas metastatic to the breast with our case representing the ninth. [10][11][12][13][14][15][16] Primary tumors in the other cases were located in the kidney, endocervix, soft tissues, endometrium and mesocolon. To the best of our knowledge this is the first case of retroperitoneal leiomyosarcoma metastasizing to the breast.…”