070.52 - Hpt dlt wo b wo hpt coma (approximate) Approximate Flag The approximate flag is on, indicating that the relationship between the code in the source system and the code in the target system is an approximate equivalent. Synonyms. Hepatitis D superinfection of hepatitis B carrier
What is mastocytosis? Mastocytosis (say mass-toe-sigh-toe-sis) is the abnormal growth of mast cells in the body. Mast cells are part of the immune system, which helps protect your body against infection. The most common form of mastocytosis is when mast cells accumulate on the skin, causing reddish-brown spots or bumps.
The presence of too many mast cells, or mastocytosis, can occur in two formsâcutaneous and systemic. The most common cutaneous (skin) form is also called urticaria pigmentosa, which occurs when mast cells infiltrate the skin.Systemic mastocytosis is caused by mast cells accumulating in the tissues and can affect organs such as the liver, spleen, bone marrow, and small intestine.Researchers first described urticaria pigmentosa in 1869. Systemic mastocytosis was first reported in the scientific literature in 1949.ystemic mastocytosis is caused by mast cells accumulating in the tissues and can affect organs such as the liver, spleen, bone marrow, and small intestine. Researchers first described urticaria pigmentosa in 1869. Systemic mastocytosis was first reported in the scientific literature in 1949.