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Table 2 Summary of malignancies reported in the 45 included studies

From: Is punctate palmoplantar keratoderma type 1 associated with malignancy? A systematic review of the literature

Type of malignancy

Number of individuals

Ages in years

The type of malignancies (n = 53) reported among 50 individuals with PPPK1

Colorectal

7

35, 43,46, 55, 82, NA, NA

Breast

5

46,94,NA,NA,NA

Pancreas

5

65,67,74,80,NA

Prostate

3

71, NA,NA

Hodgkin's lymphoma

3

30,45, 66

Renal

3

26,75, NA

Melanoma

3

50, NA

Squamous cell carcinoma

3

60,76,NA

Basal cell carcinoma

2

NA, NA

Lung

2

NA,NA

Breast and bone

1

NA

Uterus

1

63

Hepatocellular

1

NA

Oesophageal

1

NA

Atypical fibroxanthoma

1

73

Ethmoidal carcinoma

1

65

Myeloma

1

NA

‘Magencarcinom’ [stomach cancer]

1

67

Unknown type

9

NA