This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Miscellaneous, Subject name: Medicine
Clutch claw and ball appearance is seen in - 
Select and explain. 
A. Pemphigus, B. Lichen planes, C. Lichen nitidus, D. Psoriasis
C: Lichen nitidus
Answer: C: Lichen nitidus 
Explanation: The histology of lichen nitidus is very typical and described as the 'claw and ball' appearance: Focal dense lymphohistiocytic infiltrate in the upper dermis very close to the epidermis. Langhans giant cells are often present in the infiltrate. Rete ridges of the epidermis are elongated and 'clutch' the infiltrate. Red blood cells are seen just under the epidermis in the haemorrhagic/purpuric form. Eosinophilic dermal material with some cell nuclei may be seen within the epidermis in the perforating variant. Ref - pubmed.com