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Anatomy

Lower Limb

Question 126 of 180

A 34 year old man presents to the ED following a 3 day history of fever. On examination you note tender lymphadenopathy at the superficial inguinal lymph nodes. Which of the following best describes the location of the superficial inguinal lymph nodes:

Answer:

The superficial inguinal lymph nodes (about 10 in number) are located in the superficial fascia, forming a line below the inguinal ligament, and medially extending inferiorly along the terminal part of the great saphenous vein.

Deep and Superficial Inguinal Lymph Nodes

Anatomy / Lower Limb / Anterior Thigh

Last Updated: 10th April 2019

The inguinal nodes are found in the upper aspect of the femoral triangle.

Superficial Inguinal Nodes

The superficial inguinal lymph nodes (about 10 in number) are located in the superficial fascia, forming a line below the inguinal ligament, and medially extending inferiorly along the terminal part of the great saphenous vein. They receive lymph from the gluteal region, lower abdominal wall, perineum and superficial regions of the lower limb.

Deep Inguinal Nodes

The deep inguinal lymph nodes (about 1 - 3 in number) lie medial to the femoral vein within the femoral canal. They receive lymph from deep lymphatics associated with the femoral vessels and from the glans penis or clitoris in the perineum.

The inguinal lymph nodes drain to the external iliac lymph nodes associated with the external iliac artery in the abdomen.

By Henry Vandyke Carter [Public domain], via Wikimedia Commons

Lymphatic Drainage of Lower Limb. (Image by Henry Vandyke Carter [Public domain], via Wikimedia Commons)

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  • Biochemistry
  • Blood Gases
  • Haematology
Biochemistry Normal Value
Sodium 135 – 145 mmol/l
Potassium 3.0 – 4.5 mmol/l
Urea 2.5 – 7.5 mmol/l
Glucose 3.5 – 5.0 mmol/l
Creatinine 35 – 135 μmol/l
Alanine Aminotransferase (ALT) 5 – 35 U/l
Gamma-glutamyl Transferase (GGT) < 65 U/l
Alkaline Phosphatase (ALP) 30 – 135 U/l
Aspartate Aminotransferase (AST) < 40 U/l
Total Protein 60 – 80 g/l
Albumin 35 – 50 g/l
Globulin 2.4 – 3.5 g/dl
Amylase < 70 U/l
Total Bilirubin 3 – 17 μmol/l
Calcium 2.1 – 2.5 mmol/l
Chloride 95 – 105 mmol/l
Phosphate 0.8 – 1.4 mmol/l
Haematology Normal Value
Haemoglobin 11.5 – 16.6 g/dl
White Blood Cells 4.0 – 11.0 x 109/l
Platelets 150 – 450 x 109/l
MCV 80 – 96 fl
MCHC 32 – 36 g/dl
Neutrophils 2.0 – 7.5 x 109/l
Lymphocytes 1.5 – 4.0 x 109/l
Monocytes 0.3 – 1.0 x 109/l
Eosinophils 0.1 – 0.5 x 109/l
Basophils < 0.2 x 109/l
Reticulocytes < 2%
Haematocrit 0.35 – 0.49
Red Cell Distribution Width 11 – 15%
Blood Gases Normal Value
pH 7.35 – 7.45
pO2 11 – 14 kPa
pCO2 4.5 – 6.0 kPa
Base Excess -2 – +2 mmol/l
Bicarbonate 24 – 30 mmol/l
Lactate < 2 mmol/l

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