This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: None, Subject name: Pathology
In which stage of neurocysticercosis, there is no edema? 
Select and explain. 
A. Vesicular, B. Vesicular colloidal, C. Granular nodular, D. Nodular calcified
D: Nodular calcified
Answer: D: Nodular calcified 
Explanation: Ans. d. Nodular calcified (Ref Robbins 9/e1)395, SA, 1)392-393)Surrounding edema is seen in the colloidal vesicular and granular nodular stages.StageCyst wallScolexCommentVesicularNon-enhancingWall defined membraneOnly one ble scolexEccentric hyperdense hole-with-dot" appearanceSuggestive of ble larvaColloidalRing Enhancing with perilesional edemaDegenerating scolexFluid becomes more turbidEarliest stage in the cyst involution - larval degenerationGranularFocal nodular enhancing necrotic lesions with perilesional edemaDegenerating scolexEosinophilic structure Bladder and scolex are in various stages of disintegationCalcifiedSmall hyperdense nodules without perilesional edema