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What do you think ?

@lebojoycechauke Yes. Thank you so much for your answer.

@MedLearnHub **C. Polycystic kidney disease (PKD).** The gross specimen shows an enlarged kidney completely studded with numerous variably sized fluid-filled cysts replacing the normal parenchyma — a classic appearance of adult polycystic kidney disease.

Q. The gross specimen shown here is most suggestive of ? A. Wilm's tumor. B. Hydronephrosis. C. Polycystic kidney disease. D. Renal cell carcinoma.

Q. Which hormone is commonly increased during sleep deprivation? A) Insulin. B) Thyroxine. C) Melatonin. D) Cortisol.

Investigation of choice for brain tumor is? A) CT scan. B) MRI brain. C) X-ray skull. D) EEG.

Q. What is the Antidote for methanol poisoning? a. Naloxone. b. Flumazenil. c. Fomepizole. d. Atropine.

What is the Diagnosis ?

@DrsansariOrd Yes. You are on target. Thank you.

@MedLearnHub Option B ✅ 🧠 MRI remains the gold-standard imaging modality for suspected brain tumors because of its excellent soft-tissue contrast and superior anatomical detail, especially for posterior fossa and infiltrative lesions.

@ajlkfad2333 Thanks for the explanation.

Answer: B) MRI brain ➜ MRI brain is the investigation of choice for brain tumors because it provides: ➜ Superior soft tissue detail ➜ Better tumor localization and characterization ➜ Detection of edema, necrosis, and brainstem lesions ➜ Contrast enhancement with gadolinium for accurate assessment ➜ CT scan is mainly used in emergencies or when MRI is contraindicated.

@Onionfries73947 Bang on.

@MedLearnHub D

@BodyExplained You are right on point.

@MedLearnHub Cortisol

@ajlkfad2333 That's a Good clinical reasoning.

Answer: D) Cortisol ➜ Sleep deprivation commonly causes an increase in cortisol levels due to activation of the stress response system (HPA axis). ➜ Elevated cortisol is associated with: ➜ Stress and fatigue ➜ Impaired immunity ➜ Insulin resistance ➜ Poor cognitive performance ➜ Melatonin usually decreases with sleep deprivation.

@Christi58074529 Nice summary.

@MedLearnHub Cortisol - Cortisol increases during sleep deprivation primarily because the body treats lack of sleep as a physiological stressor, which activates the hypothalamic-pituitary-adrenal (HPA) axis and removes sleep’s normal inhibitory effect on cortisol production.

@albertoortegana Yes. You got that spot on. Thankful for your participation.

@MedLearnHub D) Cortisol Cortisol commonly increases during sleep deprivation

∆ Optimal spermatogenesis requires a temperature of 34°C, which is 3°C lower than core body temperature, maintained naturally by scrotal positioning. • Elevated scrotal temperatures induce oxidative stress and activate cellular apoptosis, causing severe drops in sperm count, motility, and structural morphology. • Thermal stress damages genetic material by provoking DNA strand fragmentation and activating mutagenic transposons ("jumping genes") within germ cells. • The impairment is typically reversible within roughly 74 days, corresponding to the duration of one full human sperm production cycle.

✓ An abdominal aortic aneurysm (AAA) presenting with hematemesis, hypotension, and a pulsatile mass suggests a primary aortoenteric fistula. ∆ Pathophysiology- It involves a chronic native aortic aneurysm progressively eroding directly into the adjacent third or fourth part of the duodenum. • Dx- Axial CT scan: It demonstrates a massive, dilated abdominal aorta featuring calcification and thrombus characteristic of a large AAA. • This direct communication between the high pressure aorta and gastrointestinal tract triggers rapid, catastrophic upper GI bleeding and profound hemodynamic shock.

An elderly man presents with hematemesis, hypotension, and a pulsatile abdominal mass. What is the most likely diagnosis?

@baram_kato45144 @DrMedica_13 Thank you so much. Let's keep learning and growing together along the way.

@MedLearnHub @DrMedica_13 Excellent.

Did you know? 🥀🦠🥀

@ChShafiullah15 Absolutely.

Q. Which weight-loss drug is classically associated with oily stools and fat soluble vitamin deficiency? A. Metformin. B. Orlistat. C. Fluoxetine. D. Glibenclamide.