Jf. Fetsch et al., SUPERFICIAL ANGIOMYXOMA (CUTANEOUS MYXOMA) - A CLINICOPATHOLOGICAL STUDY OF 17 CASES ARISING IN THE GENITAL REGION, International journal of gynecological pathology, 16(4), 1997, pp. 325-334
Seventeen cases of superficial angiomyxoma (cutaneous myxoma) of the g
enital region are reported. Thirteen patients were female (age range:
15-33 years; mean: 21 years) and four were male (age range: 18-55 year
s; mean: 39 years). The sites of involvement in females were the labiu
m majus or labium, not otherwise specified (n = 6), vulva (n = 4), gro
in (n = 2), and mons pubis (n = 1). All lesions in male patients invol
ved the scrotum. The tumors were present from 2 months to 4 years befo
re resection and ranged from 0.9 to 6 centimeters in maximal dimension
; 10 tumors were 3 centimeters or less in size. The predominant reason
for seeking medical attention was a slow growing painless mass. All l
esions were locally excised. Followup was obtained for 9 patients with
a mean and median follow-up interval of 135 and 95 months, respective
ly. A recurrence developed in three patients at 8 months, 7 years 11 m
onths, and 20 years. No patient has been shown to have Carney's comple
x. The tumors were immunoreactive for vimentin (11/11), CD34 (11/11),
muscle-specific actin (8/12), smooth muscle actin (9/11), S100 protein
(5/13), and Factor XIIIa (5/9). No immunoreactivity was present for d
esmin (DE-R-11), glial fibrillary acidic protein, estrogen receptor or
progesterone receptor. Superficial angiomyxomas are probably derived
from fibroblast-like cells capable of antigen modulation.