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. 2019 Apr 15;12(4):e226900. doi: 10.1136/bcr-2018-226900

Table 1.

Relevant investigations

Haematological parameters Biochemical parameters Microbiology Radiology
Haemoglobin: 6.9 gm/l
White cell count: 14×109/L
Platelet count: 350×103/µL		 CSF chemistry
Glucose: 40 mg/dL.
Protein: 50 mg/dL.
RBC: 50 cells/mm3.
LFT within limits.
KFT normal limits.		 Ziehl-Neelsen staining CSF: long, slender acid-fast bacilli seen (3+).
Gene-Xpert: negative.
MGIT: growth seen in 5 days.
TbcID: negative.
LJ media: growth seen in 5 days.
MacConkey’s agar: growth seen in 5 days.
Catalase: positive.
Nitrate: positive.
Niacin: negative.
Identification: Mycobacterium fortuitum.
MALDI-TOF: M. fortuitum.
Bacterial culture: negative.
Fungal culture: negative.		 CT scan: bilateral ventriculomegaly.
Abdominal ultrasound: cystic space-occupying lesion engulfing the peritoneal end of both shunts.

CSF, cerebrospinal fluid; LJ, Lowenstein-Jensen media; MALDI-TOF, matrix-assisted laser desorption and ionisation-time of flight; MGIT, mycobacterium growth indicator tube; LFT, liver function test; KFT, kidney function test; TbcID,tuberculosis complex identification test.