This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Papulosquamous disorders, Subject name: Dental
Which of the following seen in Psoriasis - 
Select and explain. 
A. Pautrier's micro abscess, B. munro's micro abscess, C. Grenz zone, D. Hyperkeratosis
B: munro's micro abscess
Answer: B: munro's micro abscess 
Explanation: <p>PSORIASIS:-<p>PSORIASIS:-Inflammatory skin disease.Genetic predisposition. Psoriasis susceptibility 1 (PSORS1) is the most impoant susceptibility locus. Clinical features:-1. Classic lesion-Well defined erythematous plaque with a silvery white scales.2. Size varies from pin point papules to plaques. Histopathology:-1. Hyperkeratosis 2. Parakeratosis- retention of nuclei3. Munro's microabscess in stratum corneum focal collection of neutrophils in stratum corneum4. Spongiform pustules of kogoj- collection of neutrophils in malpighian layer.5. Absence of granular layer.6. Regular elongation of rete ridges with branches and clubbing CAMEL FOOT APPEARENCE7. Thinning of suprapapillary epidermis 8. Elongation of dermal papillae with dilated and touous capillaries . IADVL textbook of dermatology page 1041