claim: The Icelandic Coast Guard is responsible for Iceland's coastal defense and it is significant to infrastructure.
evidence: An equine melanoma is a tumor that results from the abnormal growth of melanocytes in horses .. horses. horses. Unlike human melanomas , they are not thought to be caused by exposure to ultraviolet light .. melanomas. melanomas. ultraviolet light. ultraviolet light. Melanomas are the third most common type of skin cancer in horses , with sarcoids being the first most prevalent and squamous-cell carcinoma being second .. horses. horses. sarcoids. sarcoids. squamous-cell carcinoma. Squamous cell carcinoma. They are typically rounded black nodules that vary in size and can usually be found underneath the dock of the tail , the anal , perianal and genital regions , perineum , lips , eyelids , and sometimes near the throatlatch .. perineum. perineum. These tumors can be either benign , meaning not cancerous , or malignant , meaning cancerous ; while the benign tumors typically need little treatment to no treatment , the malignant tumors can cause serious problems and can potentially be life-threatening .. Different methods are used to determine if the tumor is malignant and if it has spread to other organs .. Methods used to determine malignancy include fine needle aspirate , biopsy , or complete removal .. fine needle aspirate. Fine-needle aspiration. biopsy. biopsy. To determine if the tumor has metastasized , a rectal examination or an ultrasound can be performed ; the most frequent location for metastasis include the lymph nodes , spleen , liver , the abdominal wall , the lungs , and blood vessels .. metastasized. Metastasis. ultrasound. ultrasound. lymph nodes. lymph nodes. spleen. spleen. If the tumor becomes large enough , it can cause weight loss or colic .. colic. Horse colic. It may also affect the horse 's ability to turn their head from side to side and eat and drink comfortably if the tumor is on the throat latch area , or cause faecal impaction if tumor is on the anal region .. faecal impaction. faecal impaction. These tumors can also be a serious issue if they have metastasized or if they become large and ulcerate , bleed , then become infected .. metastasized. Metastasis