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An abscess is an infectious process characterized by a collection of pus surrounded by inflamed tissue. [1, 2] Abscesses can form anywhere in the body, from a superficial skin (subcutaneous) abscess to deep abscesses in muscle, organs, or body cavities. Patients with subcutaneous skin abscesses present clinically as a firm, localized, painful, erythematous swelling that becomes fluctuant (see the image below).

The most reliable clinical sign to detect ascites is checking for bilateral flank dullness. If a patient with ascites is lying supine, fluid accumulates in the flank regions, leading to dullness on percussion. At the same time, the air-filled bowel loops are forced upwards by the free fluid due to buoyancy, resulting in tympanitic percussion. To locate specifically where dullness shifts to tympany, or the air-fluid level, percussion should be performed from the sides towards the middle. To confirm that the dullness is caused by ascites, ask the patient to switch to a lateral decubitus position. If ascites is present, the air-filled bowel loops will shift accordingly and remain at the surface of the fluid. As a result, the air-fluid level will shift as well. This is known as shifting dullness.

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This pediatrics video demonstrates the examination of the lungs and respiration in newborns and children. The assessment covers the breathing pattern, chest movement, and lung sounds, which are central elements of the respiratory examination in young patients. Respiratory assessment is one of the most frequently performed checks in child health.

This clinical-skills video demonstrates chest tube insertion, a procedure in which a tube is placed through the chest wall to drain air or fluid from around the lung. The recording shows the main steps of the procedure as it is performed in clinical practice. Chest drains are used in emergency and surgical care.

An educational explainer on timing, cycle tracking, and the factors that affect how quickly pregnancy happens. Educational only — not medical or fertility advice.

A video from Harvard medical school showing Paracentesis

daVinci Robotic hysterectomy, pelvic, and para-aortic lymphadenectomy for endometrial cancer

A vaginal hysterectomy operation is shown in this reproductive health video. The recording presents removal of the uterus through the vaginal approach in a surgical setting. It is an educational resource for students learning gynecological surgery procedures. It is part of the site's library of recorded clinical and educational material.

This surgical video, recorded in German, shows an operation for varicocele. A varicocele is an enlargement of the veins within the scrotum, and the recording documents the surgical repair as performed in the operating room. Varicocele is a common condition that is usually found on the left side.

A laparoscopic view of the diaphragmatic hernia

Examination of the lower limbs from Loyola medical school, Chicago

A teaching case shows an endotracheal tube placed in the esophagus during surgery and recognized at once. The narration explains why the tube is left in place temporarily until the airway is secured. It is used for education in anesthesia and airway management. The case is presented as it unfolded in the operating room.

This narrated procedure demonstrates an infraclavicular brachial plexus block using a nerve stimulator. The clinician measures landmarks below the clavicle, advances a stimulation needle until finger contractions confirm placement at low current, then injects local anaesthetic and threads a catheter. It is a training resource for regional anaesthesia.

Tonsil stones — small, hardened deposits that form in the crevices of the tonsils — are removed in this brief clinical video. The clip shows the stones being cleared from the tonsil surface. Tonsil stones are a common cause of persistent bad breath. Presented for medical education. Educational only — not medical advice.

Without narration, this surgical video presents a direct inguinal hernia repair. The recording follows the groin hernia operation as it proceeds in the operating room. It is shared for education in general surgery and the operative repair of inguinal hernia, running about seven and a half minutes.

Medicine is advancing faster than ever and breakthroughs are happening right now at the Detroit Medical Center. ~ Detroit Medical Center

This silent comedy sketch plays on the idea of a caveman encountering modern intermittent catheter use. The recording is a light-hearted promotional skit made by a medical supply company, rather than a clinical demonstration, and it carries no spoken narration. It sits in the site's funny videos collection.

Silent HD footage shows an open splenectomy, the surgical removal of the spleen. The recording follows the operation without spoken narration, presenting the procedure in the operating room from incision to completion. It is presented for education in general surgery, and runs a little over three minutes.

Professional dental cleaning is shown in this dentistry video, including the removal of calculus (tartar) deposits from the teeth. Scaling cleans above and below the gumline and is a routine part of preventive dental care. Presented for dental and medical education. Educational only — not medical advice.