There Is A Prominent Multiseptated Lytic Area In The Left Posterior Parietal Bone Measuring 1.5 Cm In AP Dimension And 0.7 Cm In Left Right Dimension. In Height It Measures 1.1 Cm. The Inner Cortex Of The Skull,could You Please Explain This Condition?

Question : Hi Doc, could you please explain below;There is a prominent multiseptated lytic area in the left posterior parietal bone measuring 1.5 cm in AP dimension and 0.7 cm in left right dimension. In height it measures 1.1 cm. The inner cortex of the skull at the level of this lesion is absent. It is unchanged since 4/10/2017 but does appear larger in comparison to prior CT of 4/3/2008. OTHER: Visualized paranasal. I'm trying to find out what rhoa mean above. Doctors at the hospital never mention anything about it and said I was health and I notice this on the report. Thanks ‐ Final result 08﴾/29/2018 7:47 PM﴿ ImpressionsPerformed At NO EVIDENCE OF HEMORRHAGE OR INFARCT. LEFT PARIETAL LYTIC LESION IS NOTED MOST CONSISTENT WITH A INCIDENTAL INTRAOSSEOUS VENOUS LAKE. NO CHANGE FROM 4/10/2017. RADIOLOGY NarrativePerformed At EXAM: CT HEAD W/O CONTRAST CLINICAL INFORMATION: Trauma COMPARISON: CT dated 4/10/2017. CT dated 4/3/2008. TECHNIQUE: Volumetric acquisition on a multidetector CT scanner with multiplanar reformats. A combination of automated exposure control and/or iterative reconstruction technique was utilized for dose reduction. Head without intravenous contrast. FINDINGS: VENTRICLES AND SULCI: Within normal limits for age. EXTRAAXIAL/SUBARACHNOID SPACE: No extraaxial collections. No subarachnoid hemorrhage. MIDLINE STRUCTURES: No midline shift. PARENCHYMA: No significant white matter disease. No parenchymal mass, hemorrhage, or obvious acute infarct. POSTERIOR FOSSA: Unremarkable. BONES: There is a prominent multiseptated lytic area in the left posterior parietal bone measuring 1.5 cm in AP dimension and 0.7 cm in left right dimension. In height it measures 1.1 cm. The inner cortex of the skull at the level of this lesion is absent. It is unchanged since 4/10/2017 but does appear larger in comparison to prior CT of 4/3/2008. OTHER: Visualized paranasal sinuses are clear. RADIOLOGY Procedure Note Interface, I Radiant ‐ 08/29/2018 8:07 PM PDT EXAM: CT HEAD W/O CONTRAST CLINICAL INFORMATION: Trauma COMPARISON: CT dated 4/10/2017. CT dated 4/3/2008. TECHNIQUE: Volumetric acquisition on a multidetector CT scanner with multiplanar reformats. A combination of automated exposure control and/or iterative reconstruction technique was utilized for dose reduction. Head without intravenous contrast. FINDINGS: VENTRICLES AND SULCI: Within normal limits for age. EXTRAAXIAL/SUBARACHNOID SPACE: No extraaxial collections. No