String of Kantor is seen in –
## **Core Concept**
The string sign of Kantor, also known simply as the string sign, is a radiological finding observed in certain gastrointestinal conditions. It refers to the appearance of a thin, string-like line seen on barium studies, indicative of a narrowed segment of intestine. This sign is classically associated with **intestinal tuberculosis**, particularly in the context of strictures.
## **Why the Correct Answer is Right**
The string sign of Kantor is right because it describes a characteristic radiographic finding in **intestinal tuberculosis**. This condition often leads to the formation of strictures, which are narrowings of the intestinal lumen due to chronic inflammation and fibrosis. When a barium study is performed, the contrast material passes through the narrowed segment, creating a thin, string-like appearance on the radiograph. This sign is a hallmark of the disease and helps in its diagnosis.
## **Why Each Wrong Option is Incorrect**
- **Option A:** This option is incorrect because, although Crohn's disease can also cause strictures and narrowing of the intestine, the string sign of Kantor is more specifically associated with intestinal tuberculosis.
- **Option B:** This option is incorrect as it does not directly relate to the commonly recognized conditions associated with the string sign of Kantor.
- **Option C:** While other conditions can cause intestinal strictures and similar radiographic findings, the string sign of Kantor is particularly noted in intestinal tuberculosis, making other options less accurate.
- **Option D:** This option is incorrect as it is not directly linked to the string sign of Kantor.
## **Clinical Pearl / High-Yield Fact**
A key clinical pearl is that the string sign of Kantor, while suggestive of intestinal tuberculosis, requires correlation with clinical findings, such as chronic abdominal pain, weight loss, and evidence of intestinal obstruction, as well as other diagnostic modalities like endoscopy and biopsy for definitive diagnosis.
## **Correct Answer:** C. Intestinal tuberculosis.