Source: Look down xk doctor look
Sickle sign, apple core sign, anti-halo sign, tree bud sign... Did you see the corresponding image signs in your mind when you saw the name? In order to facilitate memory, experienced image predecessors will put some typical image signs with a very distinctive name, today from "medical look" to open a new column, for everyone to collect these # never forget the image signs #, learn together, memory, we encounter classic signs and cases welcome to share in the background Oh ~ ~
Let's look at a few cases first
55 years old, male, primary mesothelioma, focusing on the location indicated by the arrow▼
77 years old, male, non-Hodgkin lymphoma, focus on the location indicated by the arrow ▼
53 years old, male, testicular stromal tumor patient, focus on the location indicated by the arrow ▼
51 years old, male, tuberculosis patient, focus on the location indicated by the arrow▼
In the 4 cases above, do you see anything abnormal in the location pointed by the arrow?
The image refers to this sign as "burnt cake sign" or "omentum cake"
Q:
What is Omentum Cake?
A:
The large omentum thickens under the pathogenic factors, increases the density, is uneven, and resembles a "cake" located between the anterior abdominal wall and the intestinal canal, called "omentum cake".
Omental dissection
Ovarian cancer is generally considered to be the most common malignancy causing omental cake, as in the above cases, in fact, peritoneal metastasis of other abdominal malignancies can also cause omental cake. Statistics: 35% of metastatic tumors are ovarian cancer, 30% are colon cancer, 10% are gastric cancer, and other malignant tumors account for about 5%.
What does the image show?
Omental paieties are mainly seen in the thickening of the large omentum, which is presented on CT as peritoneal localized or diffuse thickening, irregular or round, can be adhered to into clumps, and its internal density may be uniform or uneven. At the same time, the adjacent mesenteric membrane can be thickened.
Diagnostic considerations
The focus is to raise awareness, and when reading films, you can start from the following aspects:
(1) Because the omentum and peritoneum have a large range, the degree of lesions may be mild, so the observation should be comprehensive and careful;
(2) It is necessary to pay attention to the adjustment of the window width, and at the same time, the key cases should be multi-faceted, multi-sectional, multi-site scanning observation to reduce omission;
(3) In the diagnosis, it is necessary to pay attention to the omentum, visceral, wall peritoneum and its formations (as well as mesentery, ligaments, etc.) have their specific site characteristics and membranous structure lesion characteristics.
Apply your time to what you learn
Female, 55 years old, abdominal pain with bloating, can you find omental cake?
Come and give your answer in the comments~
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