A man with a foot ulcer

A 42 year old man attends the dermatology clinic in Queen Elizabeth Central Hospital, Blantyre in 2012 with an ulcer on the sole of his right foot.  He says that it has been present since 2004 but that he underwent surgery 1 and a half years ago.  He was told it was a squamous cell carcinoma.  It initially healed, but since then the skin has broken down and the ulcer is enlarging in size.  He went back to see the surgeons and they have sent him on to dermatology to get dressings.

  1. Can you describe what you see?
  2. What diagnoses would you consider? Is there any information that would be ideal to have that would help point you towards the most likely diagnosis?
  3. Would you like to examine any other part of his body?
  4. What would you do next?

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This is a deep, irregulary shaped ulcer on the mid-sole of the right foot.  There is no cm scale in the photo, but it must be at least 5 cm in diameter.  The ulcer looks relatively clean.  The base of the ulcer comprises of  red fleshy tissue.  It is not possible to see bone or tendons.

In this case the most likely explanation is recurrence of squamous cell carcinoma (SCC). It would be helpful to get his pathology report from his operation 18 months ago to confirm that it was SCC and to see whether it was completely excised at the time.

The differential diagnoses includes a neuropathic ulcer (this is less likely as the ulcer does not correspond to the area of sole with maximal pressure, and he has no history of neuropathy) and infection (which in this geographical setting may include fungi and mycobacteria: but note there is little discharge, swelling or surrounding inflammation).

You would want to examine his ipsilateral inguinal and femoral lymph nodes to check for signs of metastasis and if they are palpable a fine needle aspirate (or lymph node biopsy) should be sent to pathology.

A biopsy of the base of the ulcer for pathology would confirm or refute the diagnosis of recurrence of SCC.

A surgical opinion as to whether this is operable should be sought.

This case was contributed by Levie Mwale and Ann Sergeant

An unwell lady with a history of breast cancer

A 53 year old female presents to the Queen Elizabeth Hospital, Blantyre with a 2 day history of drowsiness, diarrhoea and vomiting.

Her past medical history includes hypertension, diabetes and recently diagnosed breast cancer.

On examination she is dehydrated, BP 95/60, pulse 120/min, temp 380C, O2 sats 90% on air and Glasgow Coma Score of 14/15 (E4V4M6).

  1. What other history is required?
  2. What diagnoses would you consider?
  3. What immediate tests are indicated?
  4. What treatment would you start?

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Is she on chemotherapy for her breast cancer? If so you would worry about the possibility of neutropenic sepsis.  Immediate tests would include a blood sugar level (quick to do and vital in anyone with a history drowsiness – and we know she has diabetes), urgent full blood count (FBC) and blood cultures.  Less urgent tests include a chest X ray, urine dipstick (send for microscopy and culture if indicated) and urea and electrolytes.

Intravenous (IV) fluids,  IV broad spectrum antibiotics and oxygen should be started as soon as possible.

FBC results: Hb 66, WCC 0.8, Plt 34.

This case was contributed by Ewan Brown and Leo Masamba.