Scalp dermoid cyst

Scalp dermoid cyst

Case courtesy : Dr.Cicy Kuncherian,Welcare Hospital.

Age: 27 Yrs

Sex: Male

Complaints: Swelling frontal region.

Case study: A well defined soft tissue density lesion (~ +13HU) measuring ~13 x 11 mm noted in the frontal region involving subgaleal layer. No evidence of intracranial invasion / bone erosion.

Images:

Conclusion :A well defined soft tissue lesion involving the mid frontal region causing superficial skin asymmetry as described – Imaging features in favour of dermoid cyst. Possible DD: Sebaceous cyst.

Subdural Hemorrhage MRI

Subdural Hemorrhage MRI

Case courtesy : Dr. Sreedevi Varun DMRD DNB, Sunrise Hospital

Age: 77Yrs

Sex: Female

Complaints: H/o fall.

Case study:

Area of heterogeneous T2 hyperintense signal in midline falx with maximum diameter 14 mm in highfrontal region. Cyst like area measuring 26 x 24 mm noted in midline along falx.Altered signal intensity of adjacent frontal lobe bilaterally – likely edema.
Thin extra axial hyperintense signal along left parieto-temporal convexity with maximum diameter 3 mm.

Images:

Conclusion :

Acute subdural hemorrhage in midline falx (14 mm in maximum diameter).
Thin subdural hemorrhage along left parieto-temporal convexity.
Hyperintense signal in bilateral frontal lobe adjacent to SDH – likely parenchymal edema.

Arachnoid Cyst

Arachnoid Cyst

Case courtesy : Dr.Sreedevi Varun DMRD DNB, Sunrise Hospital

Age: 4Yrs

Sex: Male

Case study:

An extra axial CSF intensity lesion in left anterior temporal fossa measuring 3.3 x 1.3 x 3.5 cm (TR x AP x CC) with no significant mass effect or perilesional edema. Prominent bilateral retro cerebellar CSF intensity area measuring approximately 3.6 x 1.7 cm (TR x AP).

Images:

Conclusion :

Extra axial CSF intensity lesion in left anterior temporal fossa – favor arachnoid cyst.
Prominent cisterna magna.

Adenoid Gland Hypertrophy

Adenoid Gland Hypertrophy

Age: 2Yrs

Sex: Male

Complaints: Speech Difficulty.

Case study:

Adenoid gland appears enlarged measuring ~ 16 .8mm (parasagittal). There is evident  narrowing of nasopharyngeal air way.

Images:

Conclusion :  Adenoid gland hypertrophy with nasopharyngeal airway narrowing.

Chiari 1 Malformation with Syringohydromyelia

Chiari 1 Malformation with Syringohydromyelia

Case courtesy : Dr. Sameer Hyderali MD, Sunrise Hospital

Age: 55Yrs

Sex: Female

Case study:

Low placed cerebellar tonsils 5 mm below the foramen magnum.
Tight foramen magnum with effaced 4th ventricle and the cisternal spaces noted.
The cervico-medullary junction shows compression.
Hyperintense area seen within the cord posteriorly from C1 to C6 level.

Images:

Conclusion :

Features consistent with Chiari 1 malformation with syringohydromyelia.

Meningioma

Meningioma

Age: 65Yrs

Sex: Male

Complaints: Head ache

Case study: Moderately enhancing right posterior parietal foci showing broad base to the dura measuring 1.8 x 3.4 x 2.5 cm. The foci shows evidence of dural tail with evidence of indentation on the adjacent brain parenchyma with mild adjacent white matter long TR hyperintensities, hypointense on T1WI. This foci shows mild diffusion restriction on the DWI/ADC.

Images:

Conclusion : A right sided posterior parietal significantly enhancing foci, broad base to dura with dural tail and adjacent brain parenchymal indentation and mild parenchymal edema – To consider possibility of meningioma.
MR spectroscopy shows significant elevation of the choline peaks with significant reduction in the NAA and altered CHO/NAA ratio. Significantly reduced creatine ratios also noted.