A posteroanterior (PA) view portable chest X-ray demonstrating a significantly enlarged cardiac silhouette, often described as a 'water-bottle' heart shape. Red arrows point to the widened lateral margins of the mediastinum/heart, which obscure the bilateral lung hila. Despite the massive cardiomegaly, the peripheral lung fields remain relatively clear without overt signs of pulmonary edema, vascular congestion, or consolidation. The costophrenic angles are partially visualized, and the trachea appears midline. Multiple external monitoring electrodes and wires are visible on the patient's chest. This radiographic presentation is highly characteristic of a large pericardial effusion, as the rapid accumulation of fluid expands the pericardial sac symmetrically, causing a globular enlargement of the cardiac shadow that masks underlying pulmonary structures.

The image consists of two diagnostic panels demonstrating a large pericardial effusion. Panel (A) is an echocardiogram in a parasternal long-axis or similar view showing a significant, dark (anechoic) space surrounding the heart, representing a large pericardial effusion. Red arrows indicate the fluid layer between the epicardium and the parietal pericardium, which causes visible compression of the cardiac chambers. Panel (B) is a posterior-anterior (PA) chest X-ray showing severe cardiomegaly with a 'water-bottle' heart configuration, characterized by a globally enlarged, globular cardiac silhouette with indistinct borders. This radiographic sign is highly suggestive of massive pericardial fluid accumulation. The lungs appear relatively clear, though the bases are obscured by the enlarged cardiac shadow and the diaphragm. The combination of these images serves as a classic educational example of the diagnostic correlation between ultrasound and radiography for pericardial disease.

This diagnostic image is an anteroposterior (AP) chest X-ray demonstrating the post-procedural state of a patient following the drainage of a large pericardial effusion. The central focus is the cardiac shadow, which shows a significant reduction in the cardiothoracic ratio compared to typical 'water bottle' heart configurations seen in tamponade. A radiopaque pericardial drain is clearly visible and highlighted by a red oval and label in the lower left cardiac region (anatomical right side of the heart silhouette). The drain's distal pigtail or curved tip is positioned within the pericardial space to facilitate continuous drainage. The surrounding lung fields are clear, with no visible pulmonary edema, pleural effusion, or infiltrates, suggesting stable respiratory status. Several external ECG leads are visible on the chest wall. This visual serves as an educational tool for identifying the radiological signs of effective pericardiocentesis and the proper positioning of a subcostal pericardial drainage catheter.

This composite diagnostic image features two panels related to a cardiovascular assessment. Panel A shows a 12-lead Electrocardiogram (ECG) demonstrating a normal sinus rhythm. A key finding is the low voltage QRS complexes globally across both limb and precordial leads, which can be clinically associated with conditions such as pericardial effusion or obesity. Panel B is a posterior-anterior (PA) chest X-ray exhibiting a significantly enlarged cardiac silhouette, resulting in a 'water bottle' heart shape often characteristic of massive pericardial effusion. There is a notable increase in the cardiothoracic ratio. The lung fields show some patchy opacities potentially suggesting mild pulmonary congestion or edema. Radiopaque medical monitoring leads are visible over the thoracic region. Together, these images illustrate the classic findings of pericardial effusion: dampened electrical activity on ECG and a globose cardiac shadow on radiography.

This diagnostic image displays a standard chest X-ray in two views: (a) Posteroanterior (PA) frontal view and (b) Lateral profile view. The frontal view reveals significant enlargement of the cardiac silhouette, known as cardiomegaly, with an increased cardiothoracic ratio (CTR). The heart exhibits a widened, somewhat globular shape, which is a classic radiographic sign associated with a large pericardial effusion ('water bottle heart' configuration). In the lateral view (b), the enlarged cardiac shadow occupies an increased portion of the retrosternal space, further confirming global cardiac enlargement. Despite the cardiomegaly, the lung fields appear relatively clear without overt signs of pulmonary edema or cephalization of vessels. The costophrenic angles are visible, and the diaphragm maintains a normal contour. This clinical photograph is a primary teaching example for identifying cardiomegaly and assessing the cardiothoracic ratio in the context of acute pericarditis or pericardial effusion.

Summary : This figure presents three medical imaging views illustrating features of achalasia in the esophagus: endoscopic foam/saliva accumulation, puckering at the gastroesophageal junction, and a barium swallow radiograph showing classic "bird beak" appearance.

A barium swallow X-ray (fluoroscopy) of the upper gastrointestinal tract demonstrating a markedly dilated esophagus. There is a prominent accumulation and stasis of contrast medium within the esophageal lumen, with visible mottling suggestive of retained food particles. The distal esophagus exhibits a sharp, smooth tapering near the esophagogastric junction, characteristic of a 'bird's beak' deformity often associated with achalasia. Below the diaphragm, the gastric sleeve from a previous laparoscopic sleeve gastrectomy (LSG) is visible with regular contours and normal transit of the contrast bolus that has managed to pass. The image illustrates secondary achalasia or post-surgical esophageal dysmotility, highlighting the contrast between the dilated thoracic esophagus and the restricted passage through the lower esophageal sphincter.

A diagnostic fluoroscopic image of a barium swallow (esophagram) demonstrating classic radiologic features of achalasia or pseudoachalasia. The image shows a markedly dilated thoracic esophagus filled with radiopaque barium contrast. There is a characteristic abrupt, symmetrical tapering of the distal esophagus at the gastroesophageal junction, creating the diagnostic 'bird's beak' appearance. Significant barium column stasis is visible proximal to the lower esophageal sphincter, indicating functional or mechanical obstruction. Minimal contrast is seen passing into the stomach, which is partially visualized in the lower quadrant. This finding is highly suggestive of impaired lower esophageal sphincter relaxation or extrinsic compression, correlating clinically with symptoms such as progressive dysphagia and weight loss.

This diagnostic image is a barium swallow esophagram (X-ray radiography) illustrating end-stage achalasia. The primary finding is a massively dilated, tortuous, and elongated thoracic esophagus, referred to as a 'sigmoid esophagus' or 'S-shaped' esophagus due to its resemblance to the sigmoid colon. White arrows delineate the lateral and medial borders of the dilated lumen, which is filled with radiopaque contrast. The esophageal body shows significant loss of primary peristalsis and characteristic pooling of barium. Distally, the esophagus exhibits smooth tapering near the gastroesophageal junction (GEJ), which typically presents as the 'bird-beak' sign in this pathology, though the distal-most segment is partially obscured by the extensive pooling in the dilated lumen. This visual is characteristic of chronic, severe achalasia leading to decompensation of the esophageal musculature. It is a critical educational resource for understanding advanced gastrointestinal motility disorders and the radiological manifestations of obstructive esophageal pathology in a clinical setting.

This lateral barium swallow radiograph (contrast esophagram) of the cervical and upper thoracic region demonstrates a large Zenker's diverticulum. A significant, well-defined, radiopaque, sac-like outpouching is visible originating from the posterior wall of the pharyngoesophageal junction, specifically at Killian's dehiscence above the cricopharyngeal muscle. The diverticulum is filled with barium contrast, appearing as an elongated, dependent sac approximately 7 cm in length that displaces the esophagus anteriorly. There is a clear narrowing or 'neck' at the proximal connection point where the diverticulum communicates with the esophageal lumen. The image highlights significant barium retention within the pouch, a hallmark finding of this false diverticulum. This diagnostic image is intended for medical education regarding upper gastrointestinal pathologies, specifically pharyngeal pouch disorders and causes of cervical dysphagia and regurgitation.

This diagnostic image is an X-ray esophagogram (barium swallow) showing a Zenker’s diverticulum in a human patient. The visual is divided into two panels: an Anteroposterior (AP) view (A) and a Lateral view (B). Both views demonstrate a large, contrast-filled, saccular outpouching measuring approximately 4 x 5 cm. In the AP view, the diverticulum appears as a prominent, rounded, radiopaque mass originating from the proximal esophagus. The Lateral view confirms the pathology is a pulsion diverticulum arising from the posterior aspect of the esophagus, specifically through Killian's triangle (the pharyngoesophageal junction). White arrows in both panels point to the relatively narrow neck of the diverticulum, measuring 1.7 cm in width. The contrast material (barium suspension) clearly opacifies the diverticular lumen and outlines the distal esophageal lumen, which appears narrowed due to the mass effect of the filled sac. Key educational concepts include the diagnosis of upper esophageal dysphagia and the typical posterior location of pharyngoesophageal diverticula.

This diagnostic image is a lateral view barium swallow (fluoroscopy/X-ray radiography) of the neck and upper aerodigestive tract. The radiopaque barium contrast medium outlines the pharynx and proximal esophagus. Visible anatomical landmarks include the cervical vertebrae, the mandible, and the soft tissues of the throat. The key pathological finding is a small, posterior outpouching of barium at the level of the pharyngoesophageal junction, specifically at Killian's triangle. This pouch measures approximately 1.1 cm and is characteristic of a Zenker's diverticulum (ZD). The contrast is seen filling the diverticulum as it passes from the hypopharynx into the esophageal lumen. This imaging study illustrates a classic case of a pulsion diverticulum, highlighting its relationship to the posterior pharyngeal wall and its clinical relevance in patients presenting with dysphagia or regurgitation.

This anteroposterior (AP) barium swallow radiograph of the chest and upper abdomen demonstrates a prominent Zenker's diverticulum. The primary finding is a large, pouch-like radiopaque structure located in the superior mediastinum, superimposed on the upper thoracic vertebrae and positioned just above the level of the clavicles. The diverticulum exhibits a distinct air-fluid level, with the inferior portion filled with dense barium contrast and the superior portion containing air. The trachea remains midline, although the large size of the diverticulum may cause minor posterior or lateral displacement not fully appreciated in the AP view. The lung fields appear clear without evidence of active consolidation, and the skeletal structures, including the ribs and clavicles, are unremarkable. This diagnostic image is characteristic of a pharyngoesophageal diverticulum, typically occurring through Killian's dehiscence, and is a key educational example for gastrointestinal radiology and the evaluation of chronic dysphagia.

This diagnostic image is an upper gastrointestinal (UGI) seriography, or barium swallow study, utilizing positive contrast to visualize the esophagus, stomach, and duodenum. The primary finding is a large, contrast-filled epiphrenic diverticulum located in the distal esophagus just above the gastroesophageal junction. The diverticulum appears as a prominent, rounded, lateral outpouching of the esophageal lumen. Distal to this, the contrast outlines the gastric fundus, body, and antrum. The proximal duodenum is also visible with characteristic mucosal fold enhancement. The image demonstrates the hallmark radiographic presentation of a large esophageal diverticulum, which can lead to clinical symptoms such as dysphagia and regurgitation. The study is typical of gastroenterology and radiology educational materials focused on esophageal motility disorders and structural abnormalities.

Postoperative barium swallow study (upper gastrointestinal contrast radiography) demonstrating the distal esophagus and gastro-esophageal junction (GEJ). The image shows the esophagus opacified with radiopaque contrast agent, revealing a significant out-pouching on the right posterior aspect labeled as an 'Esophageal diverticulum' (specifically an epiphrenic diverticulum). This diverticulum is well-defined and filled with contrast, communicating with the esophageal lumen. Distal to the diverticulum, the GEJ is clearly visualized and labeled as 'opened up', indicating surgical patency (post-Heller’s cardiomyotomy). Contrast is seen flowing smoothly through the junction into the stomach without evidence of luminal narrowing, stricture, stenosis, or extravasation. The contrast boundaries are sharp, suggesting preserved mucosal integrity and no postoperative leakage. This diagnostic image illustrates the successful management of esophageal motility disorders or structural abnormalities, confirming appropriate bolus transit into the gastric cardia.

This diagnostic image is a barium swallow radiograph (fluoroscopy) of the upper gastrointestinal tract, focusing on the thoracic esophagus. The image shows a prominent, radiopaque curvilinear structure representing the esophagus opacified with barium contrast. A large, saccular outpouching or epiphrenic diverticulum is visible in the distal esophagus, extending laterally. A distinct horizontal air-fluid level is demonstrated within the diverticulum, characterized by a radiolucent (darker) gas-filled superior portion and a radiopaque (lighter) fluid/contrast-filled inferior portion. The distal esophageal lumen appears narrowed inferior to the diverticulum, and there is evidence of mucosal irregularity and proximal reflux of contrast material. The surrounding anatomical context includes visible vertebral bodies of the thoracic spine and the faint silhouette of the diaphragm. This image serves as a classic educational example of an esophageal diverticulum and associated stasis, useful for demonstrating diagnostic imaging findings in patients presenting with chronic dysphagia and regurgitation.

This composite figure displays diagnostic findings for a 50-mm epiphrenic diverticulum located in the lower thoracic esophagus. Panel (a) is a contrast esophagogram (barium swallow) showing a prominent, saccular outpouching on the right wall of the distal esophagus, approximately 5 cm above the esophagogastric junction. Panel (b) is an axial contrast-enhanced CT scan of the lower mediastinum identifying the diverticulum (indicated by a yellow arrow) as a distinct, air- and fluid-filled structure adjacent to the esophageal lumen. Panel (c) provides an endoscopic view showing the large diverticular orifice (yellow arrow) within the lower esophagus, containing visible food residue. The surrounding esophageal mucosa appears erythematous, consistent with mild reflux esophagitis. Together, these images illustrate the radiographic, tomographic, and endoscopic features of a pulsion-type esophageal diverticulum, which is frequently associated with esophageal motility disorders like EGJ outflow obstruction.