Abstract :
[en] Background: Hereditary leiomyomatosis (HL) is an autosomal dominant condition due to
a variety of fumarate hydratase (FH) mutations in which individuals tend to develop cutaneous
leiomyomas, multiple uterine leiomyomas and are at risk for developing aggressive papillary
renal cell carcinoma.
Case presentation: A 26-year-old man with a past history of acute lymphoblastic leukemia
(T-ALL) presented with numerous painful light brown papules and nodules spread all over his
body except for the head, appearing since infancy. Similar lesions were present in his mother’s
family. A cutaneous biopsy revealed a cutaneous leiomyoma. His mother died from metastatic
uterine neoplasia and his sister suffered from leiomyoma of the uterus. No renal cancer was
reported in his family. A heterozygous pathogenic variant was detected in the FH gene.
Conclusion: To our knowledge, this is the first case possibly linking HL and T-ALL through FH
deficiency.
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