What type of cancer is associated with myositis?

What type of cancer is associated with myositis?

Polymyositis and DM symptoms can be a sign of existing cancer or may also increase the risk of malignancy. The most common cancers described in cancer associated dermatomyositis (CADM) are: breast cancer, lung, ovary, stomach, intestine, nasal cavity, throat, pancreatic, bladder and Hodgkin’s lymphoma [1–3].

Is inclusion body myositis associated with cancer?

While myositis doesn’t cause cancer, researchers have found that a higher than normal percentage of patients with myositis also develop cancer. Cancer-associated myositis (CAM) is malignancy that develops within a year or two of a diagnosis of myositis.

Can myositis ossificans turn into cancer?

To our knowledge, no reported cases of sec- ondary parosteal osteosarcoma arising from myositis ossificans have been reported in the literature; only a few reports of malignant transformation of myositis ossificans were found.

Can myositis be misdiagnosed?

Inclusion body myositis is frequently misdiagnosed as polymyositis when rimmed vacuoles are absent on muscle biopsy, and a careful neuromuscular evaluation is not performed.

Can cancer cause myopathy?

The strong association between inflammatory myopathies and malignancy has been well recognized. Recently, ‘cancer-associated myositis (CAM)’, has been proposed to be a paraneoplastic syndrome due to the anti-tumor immunity secondary to similar tumor and regenerating muscle antigens.

How do you diagnose myositis ossificans?


  1. X-ray: It can be difficult to diagnose myositis ossificans in the early stages with just an X-ray.
  2. Ultrasound: Ultrasounds use sound waves to look at the soft tissues.
  3. Computed tomography (CT) scan: Doctors can usually see the early development of bone tissue in soft tissues.

What is juvenile myositis?

Juvenile mysositis is a disease with the hallmark symptoms of muscle weakness and skin rash. The skin rash and weak muscles are caused by inflammation or swelling in the blood vessels under the skin and in the muscles.

What is acute childhood myositis?

Benign acute childhood myositis (BACM) is a rare, transient, self-limiting syndrome, affecting mid school children (usually males). It is characterized by prodromal viral illness followed by calf tenderness or pain and sudden walking abnormalities which occur on average 3 days as the initial viral illness resolves [1].


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