A Rare Case of Primary Supraclavicular Lymphadenitis due to Cryptococcus Neoformans in an HIV Infected Patient.
Cryptococcosis caused by encapsulated yeast Cryptococcus neoformans most commonly presents as disease of the central nervous system. Cryptococcus is a non-mycelial budding yeast found in soil, pigeon droppings and their nesting places. The three 'classic' virulence factors of cryptococci are: polysaccharide capsule, melanin production and growth at 37°C. Here, we present a rare case of cryptococcosis affecting left supraclavicular lymph node in a Human Immunodeficiency virus (HIV) infected individual. Culture of fine needle aspirate of the lymph node yielded Cryptococcus neoformans which was identified by standard microbiological techniques. Meyer's mucicarmine stain imparted a typical rose burgundy colour to the capsule. Unusual characteristics of the isolate included poorly developed capsule and the presence of yeast in chains resembling pseudo-hyphae. This case highlights the importance of microbiological techniques for diagnosis and prompt treatment of cryptococcosis.
Assistant Professor, Department of Microbiology, Dr Rajendra Prasad Government Medical College , Kangra, Himachal Pradesh, India .
Anuradha
A
Sood
Senior Resident, Department of Microbiology, Dr Rajendra Prasad Government Medical College , Kangra, Himachal Pradesh, India .
Lata R
LR
Chandel
Medical Officer, Department of Microbiology, Dr Rajendra Prasad Government Medical College , Kangra, Himachal Pradesh, India .
Smriti
S
Chauhan
Professor & Head, Department of Microbiology, Dr Rajendra Prasad Government Medical College , Kangra, Himachal Pradesh, India .
Kamlesh
K
Thakur
Associate Professor, Department of Microbiology, Dr Rajendra Prasad Government Medical College , Kangra, Himachal Pradesh, India .
S C
SC
Jaryal
Cryptococcus neoformans; Hypocapsular variant; Lymph node