Blue nevus is a type of melanocytic nevus. The blue colour is caused by the pigment being deeper in the skin than in ordinary nevi. In principle they are harmless but they can sometimes be mimicked by malignant lesions, i.e. some melanomas can look like a blue nevus.
Blue nevus ໝາຍເຖິງກຸ່ມການຈະເລີນເຕີບໂຕຂອງຜິວໜັງທີ່ເກີດຈາກການຈະເລີນເຕີບໂຕຂອງເມັດສີເມລາໂນໄຊທີ່ຫຼາຍເກີນໄປ, ປະກົດເປັນຕຸ່ມສີຟ້າຫາດຳຢູ່ຫົວ, ແຂນ, ຫຼືກົ້ນ. ປົກກະຕິແລ້ວພວກມັນເປັນໂສດແລະໄດ້ມາ, ແຕ່ຍັງສາມາດມີຕັ້ງແຕ່ເກີດແລະເກີດຂື້ນໃນຫຼາຍຂົງເຂດ. ບາດແຜເຫຼົ່ານີ້, ມັກຈະຜິດພາດກັບການຈະເລີນເຕີບໂຕຂອງເມັດສີເຂັ້ມກວ່າເຊັ່ນ: melanoma, ໂດຍທົ່ວໄປແລ້ວຈະປາກົດເປັນສີຟ້າຢູ່ໜັງຫົວ, ແຂນ, ຫຼັງສ່ວນລຸ່ມ ຫຼືກົ້ນ. The term blue nevus describes a group of skin lesions characterized by dermal proliferation of melanocytes presenting as blue to black nodules on the head, extremities, or buttocks. In most cases, they are acquired and present as a solitary lesion but may also be congenital and appear at multiple sites. Blue nevi are melanotic dermal lesions that commonly presents as a blue nodule on the scalp, extremities, sacrococcygeal region, or buttocks. Its characteristic blue to black hue is frequently confused with other darker pigmented lesions, including malignant melanoma.
ບາງຄັ້ງການກວດ biopsy, ຫຼື lesion ທັງຫມົດໄດ້ຖືກຜ່າຕັດອອກ. ຜົນໄດ້ຮັບທາງດ້ານຄລີນິກໂດຍທົ່ວໄປແມ່ນດີແລະມີໂອກາດຫນ້ອຍທີ່ຈະປ່ຽນເປັນມະເຮັງ. ການວິນິດໄສທີ່ແຕກຕ່າງກັນປະກອບມີ dermatofibroma ແລະ melanoma.