Cutaneous endometriosis is characterized by the appearance of papules at the umbilicus or in lower abdominal scars after gynecologic surgery in middle-aged women.[1]: 628 The size averages to 2 cm in diameter. Its colour ranges from blue to violet, brown or skin-coloured.[2]
The traditional manifestation of cutaneous endometriosis is a hard nodule or papule with an average diameter of 2 cm. If a patient presents with a nodule at the umbilicus and exhibits symptoms like discomfort, itching, bleeding, or discharge, it is recommended to consider umbilical endometriosis.[4] Localized indications of inflammation, like erythema, could be present in the impacted regions.[2]
Causes
There are two types of cutaneous endometriosis: primary and secondary. Primary cutaneous endometriosis is known to develop spontaneously, yet its exact cause is unknown.[4] It is believed that treatments related to abdominal or pelvic surgery that result in the implantation of endometrial tissue into the skin are the cause of secondary cutaneous endometriosis.[2]
Diagnosis
A biopsy of the lesion and subsequent histological analysis can be used to confirm the diagnosis.[4]
Loh, Seung-Hee; Lew, Bark-Lynn; Sim, Woo-Young (2017). "Primary Cutaneous Endometriosis of Umbilicus". Annals of Dermatology. 29 (5). Korean Dermatological Association and The Korean Society for Investigative Dermatology: 621. doi:10.5021/ad.2017.29.5.621. ISSN1013-9087.
PURVIS, ROBERT S.; TYRING, STEPHEN K. (1994). "Cutaneous and Subcutaneous Endometriosis". The Journal of Dermatologic Surgery and Oncology. 20 (10). Wiley: 693–695. doi:10.1111/j.1524-4725.1994.tb00456.x. ISSN0148-0812.