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A bite is defined as coming from the mouthparts of the arthropod. The bite consists of both the bite wound and the saliva. The saliva of the arthropod may contain anticoagulants, as in insects and arachnids which feed from blood. Feeding bites may also contain anaesthetic, to prevent the bite from being felt.
Understanding the symptoms of a brown recluse spider bite can be life-altering. "Some brown recluse spider bites can cause severe, local reactions with necrotic tissue," Dr. Giangreco says. These ...
It typically results from mild trauma such as an insect bite. [3] Risk factors for developing multiple dermatofibromas include lupus, HIV, blood cancer and some medicines that weaken immunity. [3] It is usually diagnosed by its appearance, but a biopsy may be required. [3]
Chagas disease occurs in two stages: an acute stage, which develops one to two weeks after the insect bite, and a chronic stage, which develops over many years. [2] [4] [16] The acute stage is often symptom-free. [2] When present, the symptoms are typically minor and not specific to any particular disease. [4]
Lymphoma is definitively diagnosed by a lymph-node biopsy, meaning a partial or total excision of a lymph node examined under the microscope. [22] This examination reveals histopathological features that may indicate lymphoma. After lymphoma is diagnosed, a variety of tests may be carried out to look for specific features characteristic of ...
The history and physical examination may reveal some of the signs and symptoms consistent with Mantle Cell Lymphoma. Biopsy of the involved tissues (such as the lymph nodes, bone marrow, gastrointestinal tract, spleen or other areas) shows the characteristic histopathologic changes of MCL.
Kaposi's sarcoma (KS) is a type of cancer that can form masses on the skin, in lymph nodes, in the mouth, or in other organs. [4] [6] The skin lesions are usually painless, purple and may be flat or raised. [6] [8] Lesions can occur singly, multiply in a limited area, or may be widespread. [6]
Unicentric Castleman disease is a subtype of Castleman disease (also known as giant lymph node hyperplasia, lymphoid hamartoma, or angiofollicular lymph node hyperplasia), a group of lymphoproliferative disorders characterized by lymph node enlargement, characteristic features on microscopic analysis of enlarged lymph node tissue, and a range of symptoms and clinical findings.