MRI imaging of ulnar leprosy abscess.

Leprosy is a chronic granulomatous infection, caused by mycobacterium leprae, primarily affecting the peripheral nerve trunks and cutaneous nerves. It classically presents with neural or dermal signs and symptoms. The indolent course of leprosy may manifest as erythema nodosum (appearance of tender inflamed subcutaneous nodule) and reversal reaction (inflammation in the previous skin lesion, appearance of new skin lesions, neuritis and abscess). Ulnar nerve is most commonly involved. This report illustrates the MR imaging appearance of ulnar nerve abscess. ©

Necrotising arteritis in amoebic colitis.

Massive intestinal haemorrhage rarely occurs in amoebic colitis. We report a case of caecal amoebic ulcer in a 61 year old diabetic male who presented with massive lower intestinal haemorrhage requiring blood transfusion and emergency surgical intervention. Histologically, trophozoites of Entamoeba histolytica were seen invading the wall of the submucosal arteries, causing necrotising arteritis. Rupture of a necrosed artery probably caused massive haemorrhage.

Median rhomboid glossitis: secondary to colonisation of the tongue by Actinomyces (a case report).

Median rhomboid glossitis is an inflammatory lesion of the tongue, now believed to be secondary to candidiasis. We document a case of median rhomboid glossitis with heavy colonisation by Actinomyces in a 60-year-old male. We propose that Actinomyces, like Candida, induces pseudoepitheliomatous hyperplasia of the mucosa of the tongue and florid inflammatory hyperplasia of the underlying connective tissue, resulting in the characteristic elevated lesion. Actinomyces has not earlier been implicated as a cause of median rhomboid glossitis.