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Emphysematous Pyelitis – Radiological Findings and Differential Diagnosis
1. Definition and Key Features Emphysematous pyelitis: Gas is confined only to the pelvicalyceal system, with no renal parenchymal involvement. Most commonly associated with obstructive urinary tract infections (e.g., stones) and gas-producing bacteria such as E. coli. Frequently seen in diabetic patients. 2. Radiological Findings Plain Radiograph Localized radiolucencies: Fine linear or clustered gas densities projected over the kidney, localized to the renal pelvi


Intradiploic Epidermoid Cyst :A Mystery in the Mastoid Bone_Case No: NR.1.5.1.2.002
Clinical Profile Patient: 25-year-old female. Presentation: Slow-growing, painless, firm swelling in the left mastoid region. Radiological Findings: 1. CT: The Architecture A well-defined, lytic lesion significantly expanding the outer table of the left mastoid bone. The sclerotic margins indicate a slow-growing, benign process. 2. MRI: Tissue Identity T1W Axial T2W Axial T1: Hypointense. T2: Heterog eneously hyperintense. Contrast T1: No internal enhancement, but minimal p


Late-Stage Perthes Sequelae in Adulthood: A Case Study CaseNo: MSK.4.6.3.3.2.001
Chief Complaint: 67 -year-old male, Left hip pain persisting for 20 years, becoming progressive over the last 2 years, accompanied by a significant limp. History: A history of untreated/undiagnosed hip disorder during childhood (consistent with late-stage Perthes sequelae). Physical Examination: 2 cm shortening of the left lower extremity, positive Trendelenburg sign, and severe restriction in the range of motion (ROM) in all directions. Radiological Findings: Fig 1: Coxa


Epidermoid (Inclusion) Cyst – Multimodal Imaging CaseNo: SST.1.001
Keywords: Thin capsule , subcutaneous location 🔹 Clinical: Slowly growing, subcutaneous lesion Located close to the skin surface Stable for more than 2 years 🔹 CT findings (non-contrast, 2 years ago): Central cystic appearance Surrounding dirty fat planes → chronic inflammatory reaction Stability over time favors a benign process 🔹 MRI findings (current): T1: Hypointense T2: Mildly hyperintense (not as bright as pure fluid, due to keratin/debris) Capsule: Thin, well-define


Fahr Disease and Fahr-like Calcifications (Secondary Fahr) – Professional Radiology Notes
Introduction – The Silent Signature of Calcium


Arrested Pneumatization of the Sphenoid Sinus – A Professional Teaching Case_CaseNo: HN.2.2.3.001
Clinical History 46-year-old female patient with the chief complaint of headache. Imaging Findings CT Findings (Paranasal Sinus): Well-defined area in the sphenoid sinus. Contains fat density foci and small punctate calcifications. No aeration in this region; the rest of the sinus is patent. No bone expansion, cortical thinning, or destruction. MR Findings: T1: Central iso- to mildly hyperintense, consistent with fat content. T2: Central iso- to mildly hyperintense, with


Right CPA Epidermoid Cyst CaseNo: HN.1.1.1.1.001
Case Discussion CaseNo.HN.1.1.1.1.001 Clinical History : 15-year-old female presented with mild sensory changes on the right side of the face and intermittent dizziness. Radiological Findings: MRI: Right CPA lesion approximately 20 mm. T1: Hypointense Axial T1-weighted image showing a well-circumscribed, hypointense lesion in the right cerebellopontine angle, mildly compressing the brainstem T2: Hyperintense Axial T2-weighted image demonstrating a hyperintense lesion with ch


Curvilinear Pericallosal Lipoma-Case Discussion CaseNo NR.1.4.1.1.001
Clinical History: 35-year-old female, incidental finding. Radiological Findings: Sagittal T1W T1-hyperintense lesion extending the callosal sulcus Sagittal section clearly demonstrate the curvilinear morphology and its relationship with the corpus callosum A thin, curvilinear T1-hyperintense lesion is observed extending along the callosal sulcus, following the dorsal aspect of the corpus callosum. The signal characteristics are consistent with fat. There is no associated co


Atypical Hyperdense Thornwaldt Cyst with Lateral Extension
Clinical Presentation: A 70-year-old male patient. A lesion approximately 30x16 mm in size is located in the left parasagittal region of the posterior nasopharyngeal wall. Key Findings: Posterior wall localization Left parasagittal position Finger-like extension towards the Rosenmüller fossa On MRI; Isointense on T1-weighted images Lower signal intensity compared to CSF on T2, but remains hyperintense. Markedly bright (hyperin
Dr.Dilek Altınsoy-Radiologist/Founder of @radiologycasediscussion
Dec 20, 20253 min read


Post-operative Proximal Muscle Pain : Meeting Subclinical Hypothyroidism
A case analysis exploring the link between subclinical hypothyroidism and persistent proximal muscle pain in a 74-year-old female patient following lumbar and scoliosis surgery.
Dr.Dilek Altınsoy-Radiologist/Founder of @radiologycasediscussion
Aug 18, 20252 min read


Acute Appendicitis on CT: Key Imaging Findings Every Radiology Resident Must Know
Acute Appendicitis – Condensed Summary 1. Etiology Luminal obstruction is the most common cause (≥50%) Fecalith (appendicolith) Lymphoid hyperplasia (especially in children and young adults) Rare: tumor, parasite, foreign body Obstruction → continued mucus secretion → ↑ intraluminal pressure → impaired venous return → ischemia + bacterial overgrowth → risk of perforation 2. Pathophysiology Obstruction + inflammation → wall edema → lumen dilatation (>6 mm) Advanced stage: necr
Dr.Dilek Altınsoy-Radiologist/Founder of @radiologycasediscussion
Aug 12, 20253 min read


Fahr’s Syndrome: A Multidisciplinary Analysis of Clinical and Radiological Findings
Can Imaging Speak? A Comprehensive Case Study on BG-Thalamic Calcifications 🔍 Patient Information: Age/Sex: 70-year-old male Complaint: Dizziness, balance disturbance History: Similar calcifications were noted on a brain CT performed 6 years ago. Imaging: New brain CT and MRI show bilateral basal ganglia and thalamic calcifications. Laboratory: Blood glucose: 123 mg/dL (borderline diabetic, but not acutely significant) Calcium and phosphorus: Normal PTH and magnesi
Dr.Dilek Altınsoy-Radiologist/Founder of @radiologycasediscussion
Aug 6, 20252 min read


Seasonal Case Recap: Torsion in the Middle of Summer – or Just a Varicocele? Case No: ABD.3.4.003
Yaz ortasında torsiyon şüphesiyle gelen ancak varikosel tanısı alan iki dikkat çekici vaka. / Two striking cases of varicocele misdiagnosed as torsion during the summer.
Dr.Dilek Altınsoy-Radiologist/Founder of @radiologycasediscussion
Jul 29, 20252 min read
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