During lymphadenectomy in the left axilla of a 38-year-old woman with a 1.4 cm invasive ductal breast carcinoma an accessory muscle was found. Due to the presence of the anomalous muscle the lymphadenectomy was carried out with difficulty through a limited field. Based on its anatomical characteristics, the supernumerary muscle was recognized as the pectoralis quartus. To our knowledge this is the first report of a pectoralis quartus muscle as a surgical finding. The surgeon should be aware of the possible presence of this anomaly as well as its anatomical characteristics in order to avoid any complications.
Download full-text PDF |
Source |
|---|
Publication Analysis
Top Keywords
Similar Publications
Axillary arch muscle and pectoralis quartus: an unusual combination of two variant supernumerary muscles in the axillary region - a case report.
Surg Radiol Anat
October 2024
Department of Anatomy, All India Institute of Medical Sciences, New Delhi, India.
Article Synopsis
- Variant anatomy in the axillary region is important for surgeons, especially during radical dissection surgeries.
- A rare case was found of two accessory muscle slips from the latissimus dorsi and pectoralis major that cross over key neurovascular structures in the axilla.
- Knowing about these anatomical variations can help prevent nerve and blood vessel damage during surgery, reducing the risk of complications.
Accessory thoracic muscles in human foetuses.
Folia Morphol (Warsz)
November 2024
Department of Clinical Anatomy, Masovian Academy in Plock, Płock, Poland.
Article Synopsis
- The study investigates the development of accessory muscles in the pectoral region of human fetuses, focusing on the pectoralis major and minor muscles, which normally develop from a common embryonic mass.
- Researchers examined 50 human fetuses (25 male and 25 female) between 18-38 weeks of gestation to identify any aberrant muscle formations that could arise from disrupted development.
- The results revealed accessory muscles in 16% of samples, with the pectoralis quartus being the most common; understanding these variations can be significant for clinical practices, particularly in fields like plastic surgery.
A very rare case of a thoracobrachialis muscle.
Surg Radiol Anat
November 2023
Department of Anatomical Dissection and Donation, Medical University of Lodz, Lodz, Poland.
Article Synopsis
- The anterior arm compartment contains the biceps brachii, brachialis, and coracobrachialis muscles, each exhibiting unique morphological differences.
- During an anatomical dissection, a variant muscle was discovered; it originated from the biceps brachii fascia and pectoralis major tendon and connected to the brachial fascia.
- Understanding these anatomical variations is crucial for clinical practice as they can affect nearby neurovascular structures, potentially leading to issues like tingling, muscle weakness, and decreased sensation.
Variations of accessory thoracic muscles identified in the ethnically diverse whole-body donation population in Northern California.
Folia Morphol (Warsz)
November 2023
Department of Cell Biology and Human Anatomy, University of California, School of Medicine, Davis, California, United States.
Accessory thoracic muscles in humans are relatively common and it is important to draw awareness to their variable presentations and potential clinical implications owing to their close association with the axilla. Here we report four cases of accessory thoracic muscle variations identified in the ethnically diverse whole- -body donation population in Northern California (4 out of 48 donors, 8.3%).
View Article and Find Full Text PDFThe and combined muscle variation: description and surgical relevance.
Autops Case Rep
April 2020
Universidade Federal do Espírito Santo (UFES), Laboratory of Applied Morphology. Vitória, ES, Brazil.
The authors describe a rare unilateral muscle variation in the thoracic wall combining the and muscles. A routine dissection was performed in the upper right limb of a male adult cadaver with approximately 35-50 years of age, embalmed in formalin 10%. An accessory muscle, the was identified and was associated with a tendon that was inserted in the medial humeral epicondyle, characteristic of the muscle tendon.
View Article and Find Full Text PDFWant AI Summaries of new PubMed Abstracts delivered to your In-box?
Enter search terms and have AI summaries delivered each week - change queries or unsubscribe any time!