<prompt> Popcorn calcification in lung is characteristic of:Congenital adenoid malformationHamartomaSmall cell Ca lungBronchial carcinoids  <response>: Ans: B Hamartoma Ref: Multiple SourcesExplanation:Chest X-Ray FindingsHeart and Blood VesselsFI ask-shaped Pear-shaped Leathe- bottle Money-bag shaped heart - Pericardial effusionBoot-shaped heart Coer-en-sabot - Fallots tetralogyBox shaped appearance - Tricuspid atresiaJug Handle appearance - Primary pulmonary artery hypertension3 like appearance - Coarctation of AortaEgg on side appearance - Transposition of great vesselsEgg in cup appearance - Constrictive pericarditisSnow-man heart - TAPVC total anomalous pulmonary venous connectionFigure of 8 - TAPVC total anomalous pulmonary venous connectionCottage leaf appearance - TAPVCPericardial calcification - Constrictive pericarditisCalcification in heart wall - is seen in - Carcinoid syndromeCalfication of ascending aorta - Atherosclerosis, SyphilisHilar dance on fluoroscopy - Atrial Septal DefectX-ray finding in Ebsteins anomaly - Pulmonary oligemiaPosterior displacement of trachea - seen in - aneurysm of aortaObliteration of left border of heart PA view of chest is - suggestive of - Lingular pathology left lungBats wings appearance - Pulmonary oedemaPruned tree appearance of pulmonary circulation - Pulmonary artery hypertensionLungsGround glass appearance - Hyaline membrane disease.Solitary pulmonary mass lesion 4 cms - is most commonly due to - Bronchial adenoma.Honey Comb appearance.SarcoidosisQ.Histiocytosis X.Interstitial king diseaseQ.TuberculosisQ.Collagen disordersQ.PneumoconiosisQ.Drugs - bleomycin, busulphan, melphalan. cyclophosphamide.Meniscus sign i Crescent sign mobile mass in pulmonary cavity is most commonly seen in - Aspergilloma fungal ball lesion.Egg-Shell calcification - SilicosisQ, SarcoidosisQ, Coal miners pneumoconiosisQ, Lymphoma following radiotherupyQ.Pop-corn calcification Craggy pop-corn calcification - Pulmonary Hamartoma.Pleural calcification - most common cause is - Tuberculosis Asbestosis.Diaphragmatic pleura calcification - is due to - Asbestosis.Calcification in a pulmonary metastasis - is most commomly due to - Osteosarcoma.Coin shadow in the lung single, w ith calcification in the centre - Epidermoid carcinoma.For radiologically evident pleural effusion - the minimal amount of pleural fluid that should be present is - 250 ml.Plethoric lung fields - seen in - L-R shunts VSD. PDA. ASD.Oligemic lung fields - Pulmonary atreisa. Stenosis; Ebsteins anomaly.Perihilar fluffy opacities - seen in - Pulmonary venous hypertension.RibsSuperior surface notch of ribs - seen in - Hyper- parathyroidsm. Neurofibromatosis, Connective tissue disorders.Inferior surface notch of ribs - seen in - Coarctation of Aorta, SVC obstruction, Chest wall AV fistula. Aortic Thrombosis.Unilateral notching of ribs - Coarctation of Left subclavian artery. Subclavian artery block, Blalock-Taussig Operation.OthersDisplacement of tracheal shadow - most common cause is - Thyroid swelling.Water Lily sign - Ruptured hydatid cyst. 