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Abdominal Regions and Quadrants

Abdominal Regions and Quadrants

To promote clear communication, for instance, about the location of a patient's abdominal pain or a suspicious mass, anatomists and clinicians typically use imaginary lines to categorize the abdominopelvic cavity into either four quadrants or nine regions to identify organs in the cavity.
The simpler quadrants approach, which is more commonly used in medicine, subdivides the cavity with one horizontal and one vertical line that intersects at the patient's umbilicus (navel). The four quadrants...

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Related Experiment Video

Updated: Jun 10, 2026

Caudal-to-cranial Approach in Laparoscopic Right Hemicolectomy with Complete Mesocolon Excision and D3 Lymph Node Dissection

Caudal-to-cranial Approach in Laparoscopic Right Hemicolectomy with Complete Mesocolon Excision and D3 Lymph Node Dissection

Published on: January 9, 2026

Differences between right- and left-sided colon carcinomas.

A A K Tentes¹, O S Korakianitis, S Kakolyris

¹Department of Surgery, Didimotichon General Hospital, 683 00 Didimotichon, Greece. atentes@did-hosp.gr

Journal of B.U.ON. : Official Journal of the Balkan Union of Oncology

|July 27, 2010

Summary

Right and left colon carcinomas show similar biological behavior and survival rates. While some minor histopathological differences exist, they do not impact recurrence or overall outcomes in colon cancer patients.

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Last Updated: Jun 10, 2026

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Surgical Trunk Oriented Laparoscopic Right Hemicolectomy (ST-LRH) for Right-Sided Colon Cancer

Surgical Trunk Oriented Laparoscopic Right Hemicolectomy (ST-LRH) for Right-Sided Colon Cancer

Published on: July 25, 2025

Area of Science:

Oncology
Gastroenterology
Surgical Pathology

Background:

Right colon carcinomas (RC) and left colon carcinomas (LC) present potential clinical and histopathological variations.
Understanding these differences is crucial for accurate diagnosis and treatment strategies in colorectal cancer.

Purpose of the Study:

To investigate clinical, histopathological, and biological distinctions between right and left colon carcinomas.
To determine if tumor location influences patient survival, recurrence patterns, and overall outcomes.

Main Methods:

Retrospective analysis of 109 patients with RC and 186 patients with LC treated between 1987-2007.
Correlation of clinical, histopathological, and biological variables with tumor location.
Evaluation of the relationship between tumor location, overall survival, and recurrence.

Main Results:

Right colon carcinomas exhibited a higher incidence of distant metastases at diagnosis and were more frequently poorly differentiated.
No significant differences were observed in 10-year survival rates between RC and LC groups (63% vs. 66%).
Recurrence rates, recurrence sites, and in-hospital mortality/morbidity were similar for both groups.

Conclusions:

Right and left colon carcinomas demonstrate comparable biological behavior.
Minor histopathological differences do not significantly affect survival or recurrence development in colon cancer.
Tumor location is not a significant prognostic factor for overall survival or recurrence in colon cancer.