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[6] [7] It is derived from the peritoneum, where the wall of the general peritoneal cavity comes into contact with the lesser sac between the left kidney and the spleen; the splenic artery and vein pass between its two layers. It contains the tail of the pancreas, the only intraperitoneal portion of the pancreas, and splenic vessels.
Histology of a normal lymphoid follicle, with marginal zone annotated at bottom.. Numerous factors appear to be involved in the development of EMZL. In a small number of cases where there is a family history of a blood cancer particularly leukemia, or a number of autoimmune diseases such as Sjögren syndrome and lupus erythematosus, there is seen to be an increased frequency.
The left supraclavicular nodes are the classical Virchow's node because they receive lymphatic drainage of most of the body (from the thoracic duct) and enters the venous circulation via the left subclavian vein. The metastasis may block the thoracic duct leading to regurgitation into the surrounding Virchow's nodes.
The left paraaortic nodes form a chain on the left side of the abdominal aorta in front of the origin of the psoas major and on the left crus of the diaphragm. The paraaortic and retroaortic nodes receive: (a) the efferents of the common iliac lymph nodes
In medicine, nodules are small firm lumps, usually greater than 1 cm in diameter. [ 1 ] [ 2 ] If filled with fluid they are referred to as cysts . [ 2 ] Smaller (less than 0.5 cm) raised soft tissue bumps may be termed papules .
≥ 7 mm > 4 and < 7 mm: ≤ 4 mm A (anterior/posterior locator) A descriptor of “a,” “p,” or “x” is assigned for tumour location. L (location relative to polar lines) Entirely below lower polar or entirely above upper polar line: Mass crosses polar line: 50% of the mass is across polar line, or mass is entirely between polar lines, or
In medicine, the Sister Mary Joseph nodule (sometimes Sister Mary Joseph node or Sister Mary Joseph sign) refers to a palpable nodule bulging into the umbilicus as a result of metastasis of a malignant cancer in the pelvis or abdomen through the round ligament of liver. [1] Sister Mary Joseph nodules can be painful to palpation. [2]
An accessory spleen is a small nodule of splenic tissue found apart from the main body of the spleen. Accessory spleens are found in approximately 10 percent of the population [1] and are typically around 1 centimetre in diameter. They may resemble a lymph node or a small spleen. They form either by the result of developmental anomalies or ...