Venous lake - Ziwa La Venoushttps://en.wikipedia.org/wiki/Venous_lake
Ziwa La Venous (Venous lake) kwa ujumla ni papuli laini, inayoweza kubana, na giza iliyokolea, yenye urefu wa 0.2 – 1 cm inayopatikana kwa kawaida kwenye sehemu za mpaka wa kinywa. Vidonda hivi hutokea kwa watu wazee. Ingawa vidonda hivi vinaweza kufanana na melanoma ya nodular, kidonda cha ziwa la Venous (Venous lake) ni laini.

Matibabu
Ingawa kukatwa kunazingatiwa, vidonda vinaweza kuangaliwa bila matibabo.

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  • Inatokea hasa kwenye midomo.
References Senile Hemangioma of the Lips - Case reports 25484424 
NIH
Venous lake ni senile hemangioma ya midomo. Kwa kawaida ni uvimbe laini, wa rangi ya buluu, unaosababishwa na mishipa midogo iliyopanuka. Mara nyingi huonekana pekee na haina maumivu kwa kugusa. Hutokea zaidi katika sehemu za uso na masikio ambazo hupata jua nyingi. Mwanamume mwenye umri wa miaka 46 alikuja akiwa na uvimbe mkubwa kwenye mdomo wake wa chini ambao ulikuwa umekua kwa miezi 8. Ulianza ndogo kisha ukakua baada ya muda. Alisema hakuwa amejeruhiwa eneo hilo, wala hakuwa na historia ya kutokea damu bila sababu au baada ya majeraha madogo. Daktari alipomchunguza, aligundua nundu moja ya rangi ya samawati kwenye mdomo wake wa chini ambayo ilikuwa laini na rahisi kubana. Daktari alitumia cryotherapy kwa nitrojeni kioevu, akifunga kidonda kwa sekunde 10 kwa kila kipindi na kuweka ukingo mdogo karibu na nundu. Walifanya matibabu haya kila baada ya wiki mbili. Baada ya wiki 12, kulikuwa na uboreshaji wa kiasi.
A venous lake, sometimes referred to as senile hemangioma of the lips is usually a solitary, non-indurated, soft, compressible, blue papule occurring due to dilatation of venules. It is commonly found on sun-exposed surfaces of the face and ears. A 46 year old male patient presented with an 8 month history of a single, painless, bluish swelling over the lower lip which began as a pea sized lesion and gradually increased to the present size. Patient strongly denied any history of trauma at the site. No history of bleeding spontaneously or following minimal trauma could be elicited. On physical examination, a single, violaceous, soft, compressible, non-indurated, non-pulsatile papule was present on the lower lip. Patient was treated with cryotherapy with application of liquid nitrogen by dipstick method with one 10-second freeze-thaw cycle with a 1-mm margin. This was done at biweekly intervals. Some improvement was obtained following 12 weeks of therapy.