Merkel Cell Carcinoma Histology Images

Merkel cell carcinoma mcc which is also known as neuroendocrine carcinoma or trabecular cancer is a rare cancer that occurs when the growth of merkel cells in the skin is out of control.

Merkel cell carcinoma histology images.

If the carcinoma metastasize deeply it is now harder to treat and can lead to death. A barely noticeable 6 mm slightly dermal nodule below the hairline that had been present for about 6 weeks. Merkel cell carcinoma is an uncommon but very dangerous type of skin cancer it occurs most often in fair skinned individuals over the age of 50. Pictures of merkel cell carcinoma.

This lesion is a merkel cell carcinoma and squamous carcinoma scc collision tumor meaning the two tumors are directly adjacent to each other. Merkel cell carcinoma is aggressive and associated with high mortality. The tumor developed in an area of extensive sun damage. It goes first to the lymph nodes and travels to adjacent tissues.

When this carcinoma spreads to the body it metastasizes deep down to the bones and underlying tissues. Merkel cell carcinoma primarily affects the sun exposed skin of elderly males and preferentially the head and neck region. It s a type of skin cancer that occurs when cells in the skin known as merkel cells grow uncontrollably. 56 percent of mccs are believed to be benign when initially examined by physicians who may mistake the tumors for cysts or infected hair follicles.

Preauricular lymph node metastasis was also present. Merkel cells are situated in the top most layer of the skin which is very near to the nerve endings that accept the touch sensation. The classic pattern of ck20 expression is dot like and paranuclear. Medical care is often not sought early as these lesions do not appear concerning.

Pictures of merkel cell carcinoma. Looking much like an insect bite testing revealed that the reddish spot on this patient s shin was actually merkel cell carcinoma. Collision tumors such as this are caused by sunlight and are almost always negative for the merkel cell polyomavirus. Merkel cell carcinomas look like red blue or flesh colored lumps that appear on sun exposed areas of the skin.

Diagnosis and management of merkel cell carcinoma presents distinct challenges including.