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Year : 1994  |  Volume : 60  |  Issue : 2  |  Page : 99-100

Red grain mycetoma foot in Western Rajasthan

Correspondence Address:
D R Mathur

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Usually the colour of the grains seen in cases of mycetoma are either black or yellow. Recently there were reports that unusual red grains had been noticed in cases of mycetoma. A case of red grain mycetoma is reported.

Keywords: Red grain mycetoma, Actinomadura Pelletieri

How to cite this article:
Mathur D R, Prakash P, Gupta P C, Purohit A. Red grain mycetoma foot in Western Rajasthan. Indian J Dermatol Venereol Leprol 1994;60:99-100

How to cite this URL:
Mathur D R, Prakash P, Gupta P C, Purohit A. Red grain mycetoma foot in Western Rajasthan. Indian J Dermatol Venereol Leprol [serial online] 1994 [cited 2020 Jul 16];60:99-100. Available from:

  Introduction Top

Extensive studies of mycetoma has also been carried out in western Rajasthan, [1] where dried arid climate predominates with minimal rainfall. Due to substantial variation in the climatic condition, there is variation in the causal agents of mycetoma and therefore in North India, predominant type is Maduromycotic mycetoma [2] - a black grain mycetoma and in South India, predominant type is Actinomycotic [3] - yellow grain mycetoma.

In recent studies, we have observed a few cases of unusual red grain mycetoma caused by Actinomadura pelletieri. [4]sub An additional recent case of red grain mycetoma caused by  Actinomadura pelletieri Scientific Name Search a farmer with the habit of bare footed walking is reported.

  Case Report Top

A 57-year-old farmer reported to Primary Health Centre. Mokalsar of Barmer district with the complaints of swelling, multiple discharging sinuses present on the planter and dorsal aspect of right foot involving the great toe and medial side of planter surface. Since last 2 years, patient did not notice the discharge of granules as there was constant bloody discharge. On examination, there were multiple nodules and sinuses on dorsum and planter surface of foot involving great toe. Soft tissue of the great toe was predominantly affected without evidence of bony involvement. A provisional diagnosis of mycetoma foot was made and wide excision of the skin and sinuses was done.

Haematoxylin and Eosin stained section of biopsy material showed sinus tract lined by chronic non-specific vascular granulation tissue and microabscesses around the fungal granules. The granules were tiny oval to spherical irregular and fragmented with smooth denticulate edge, these were stained intensely with haemotoxylin and eosin stain and were without any cementing substance, and were non-acid fast by Ziehl-Neelson stain. Per lodic Acid Schiff and Gram's stains were positive because of the classical semilunar geometrical morphology of fungal colony with denticulate margins. a diagnosis of A.pelletieri was made [Figure - 1]. Culture of the granules could not be done as sample was received in formalin.

  Comments Top

In Western Rajasthan, though the commonest species identified is Madurella mycetomi, [4] a few cases of red grain mycetoma caused by A. pelletieri has been reported. [4] This shows that there is increasing trend of mycetoma infection by A. pelletieri in this region, the probable contributing factor is improvement in average rain fall at some places. The presence of red grains in sinuses on cutting the biopsy specimen gave a suspicion of A. pelletieri which was further confirmed by characteristic histopathological examination, which shows the typical purple haematoxylinophilic semilunar granules.

Though the commonest site of involvement is foot and lower extremity, extrapedal sites like hands, neck, back and scalp have also been reported. [5],[6]

Cases of'mycetoma are easy to diagnose in this environment due to classical triad of symptoms like swellings, sinuses and discharging granules, particularly if granules are black/yellow in colour. In this case, clinically it was difficult to diagnose as red grains were admixed with bloody discharge. Therefore it is ideal that whenever we find swellings and sinuses even without discharging granules, a biopsy/culture should always be done.

X-ray of foot revealed soft tissue shadow without any evidence of bony involvement and erosion. Hence no amputation was done and patient was being treated medically with Dapsone and Cotrimoxazole for a period of 6 months and followup is done at regular intervals for any evidence of discharge and granules.

  References Top

1.Joshi KR, Sanghvi A, Vyas MCR, Sharma JC. Etiology and distribution of mycetoma in Rajasthan, India. Indian J Med Res 1987; 85 694-8.  Back to cited text no. 1    
2.Talwar P, Sehgal SC. Mycetoma in Northern India. Sabouraudia 1979; 17: 287-91. .  Back to cited text no. 2    
3.Venugopal TV, Venugopal PV, Paramasivan CN, Schetty BMV, Subramanian S. Mycetoma in Madras. Sabouradia, 1977; 15 : 17-22.  Back to cited text no. 3    
4.Mathur DR, Bharadwaj V, Vaishnav K, Ramdeo IN. Red grain mycetoma caused by Actinomadura pelletieri in Western Rajasthan : Report of two cases. Indian J Pathol Microbiol 1993; 36/4 : 486-8.  Back to cited text no. 4    
5.Joshi KR, Mathur DR, Sharma JC, Vyas MCR, Sanghvi A. Mycetoma caused by Aspergillus nidulans in India. J Trop Med & Hyg 1985; 88 : 41-4.  Back to cited text no. 5    
6.Pankaja Lakshmi, V. Venugopal, Tara Lakshmi, V. Venugopal. Red grain mycetoma of the scalp due to Actinomadura pelletieri in Madurai. Indian J Pathol Microbiol 1990; 33/ 4 : 384-5.  Back to cited text no. 6    


[Figure - 1]

This article has been cited by
1 Incidence and changing pattern of mycetoma in western Rajasthan
Bakshi, R., Mathur, D.
Indian Journal of Pathology and Microbiology. 2008; 51(1): 154-155


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