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The right lateral paracolic gutter. The left medial paracolic gutter. The right and left paracolic gutters are peritoneal recesses on the posterior abdominal wall lying alongside the ascending and descending colon. The main paracolic gutter lies lateral to the colon on each side.
In anatomy, the abdominal wall represents the boundaries of the abdominal cavity.The abdominal wall is split into the anterolateral and posterior walls. [1]There is a common set of layers covering and forming all the walls: the deepest being the visceral peritoneum, which covers many of the abdominal organs (most of the large and small intestines, for example), and the parietal peritoneum ...
The normal thickness of the small intestinal wall is 3–5 mm, [8] and 1–5 mm in the large intestine. [9] Focal, irregular and asymmetrical gastrointestinal wall thickening on CT scan suggests a malignancy. [9] Segmental or diffuse gastrointestinal wall thickening is most often due to ischemic, inflammatory or infectious disease. [9]
Castell's sign [1] is a medical sign assessed to evaluate splenomegaly and typically part of an abdominal examination. It is an alternative physical examination maneuver to percussion over Traube's space. Splenomegaly, although associated with numerous diseases, remains one of the more elusive physical exam findings in the abdomen.
3 cm on abdominal X-rays [21] [24] (Projectional radiography confers a geometric magnification compared to CT [25]) Wall thickening: 3–5 mm [26] Spleen: Splenomegaly: Medical imaging: Largest dimension of over 11 cm, [27] [28] or craniocaudal height of 13 [29] cm. Moderate splenomegaly: the largest dimension is between 11–20 cm [27]
Pneumoperitoneum is pneumatosis (abnormal presence of air or other gas) in the peritoneal cavity, a potential space within the abdominal cavity.The most common cause is a perforated abdominal organ, generally from a perforated peptic ulcer, although any part of the bowel may perforate from a benign ulcer, tumor or abdominal trauma.
Invasion of tumours through the layers of the gastrointestinal wall is used in staging of tumour spread. This affects treatment and prognosis. The normal thickness of the small intestinal wall is 3–5 mm, [6] and 1–5 mm in the large intestine. [7] Focal, irregular and asymmetrical gastrointestinal wall thickening suggests a malignancy. [7]
The human abdomen is divided into quadrants and regions by anatomists and physicians for the purposes of study, diagnosis, and treatment. [1] [2] The division into four quadrants allows the localisation of pain and tenderness, scars, lumps, and other items of interest, narrowing in on which organs and tissues may be involved.