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Quiste esplénico verdadero
Podemos estudiar de varias formas a los quistes esplénicos:Parasitarios / No parasitarios. Verdaderos / Falsos (si tienen revestimiento epitelial o no).Los quistes esplénicos congénitos son poco frecuentes.A nivel mundial los quistes más frecuentes del bazo son ocasionados por echinococcusLos quistes verdaderos están revestidos por epitelio, mientras que los quistes falsos o pseudoquistes no lo están…
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Pneumatosis cystoides intestinalis
Can be found in 0.03% Autopsies Described first by Du Vernoi in 1783 Risk Factors:Colonoscopies, Surgery, Chronic pulmonary disease, Conective tissue diseases, Use of sorbitol and lactulose, Chemotherapy (Bevacizumab and Sunitinib) Localization frequency: 1st Ileon, 2nd Colon, 3rd Mixed Pathology. Spaces filled with gases (submucosa and subserosa). Composition Nitrogen + Hidrogen and CO2 3 theoriesMechanical…
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Single Umbilical Artery
The normal umbilical cord has two arteries and one vein, that being said Absence of one of the umbilical arteries can happen -how often you may ask-, not that often roughly in 0.5-5% of neonates (depending on the filters applied) But we can use 1% as a mnemonic value. In 10-27% of cases the fetus…
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Wilms Tumor (Nephroblastoma)
Named in honor of Max Wilms (who originally proposed the origin of mixed kidney tumors) Originated from nephrogenic blastema 90% of kidney pediatric tumors Frequently present WT1 alterations (11p13) Associated with syndromes (10%): Beckwith-Wiedemann, Denysh-Drash, WAGR Palpable Painless mass is usually the most frequent presentation Well circumscribed, pseudo encapsulated, gray-tan. Can have cystic areas Usually…
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Fibrocystic Changes of the breast
Very frequent in women during reproductive period (25-45 years) Can mimic several situations, clinically and radiologically Usually multifocal and bilateral Can present with discomfort, pain, heaviness or nipple discharge Some cases can even present with axillary lymphadenopathy Ultrasound usually discovers fibrosis, cysts and microcalcifications The gross appearence is a poorly defined, gray-white area with cysts…
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