PMC6243350_01
MR cholangiopancreatography showing the dilated common bile duct with abrupt cut-off (arrow).
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MRI and MR cholangiopancreatography were performed, which revealed a dilated CBD with an abrupt cut-off of the distal CBD with few subcentimetre lymph nodes (Figure 1). Mantoux test was positive with an induration of 25 x 25 mm at 72 h.
Erythematous, tender, superficial nodule on the skin that developed at the site of fine needle aspiration cytology (arrow).
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Figure 2 (indicated by arrow). FNAC tract seeding by tuberculosis was suspected and excision biopsy of the nodule was performed.
(a) Section showing unremarkable epidermis with moderate to dense perivascular and periappendageal inflammatory infiltrate in the dermis (arrow) (haematoxylin and eosin stain, 100x). (b) Scattered, ill-formed epithelioid cell granulomas. (c) Lymphohistiocytic inflammation admixed with many neutrophils, eosinophils and Langerhans-type giant cells (arrows) (haematoxylin and eosin stain, 400x). (d) Ziehl-Neelsen stain showing acid-fast bacilli (arrow) (Ziehl-Neelsen stain, 1000x).
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Ziehl-Neelsen stain for acid-fast bacilli was positive (Figure 3).