PMC10207187_01
(a) The lesion with 1 x 2 cm in diameter, brown crusty colour with minimal bleeding observed in the left parietal area of the scalp. (b) On polarised light dermatoscopy: haemorrhagic brown crusts and light pink atrophic areas at the edges of the lesion
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F1
On dermatological examination, the lesion was 1 x 2 cm in diameter, brown crusty colour in the centre with a small haemorrhage detected in the left parietal area of the scalp [Figure 1a]. Haemorrhagic brown crusts and light pink atrophic areas at the edges of the lesion were noted on dermatoscopy [Figure 1b].
Histopathological findings and immunohistochemistry of pleomorphic dermal sarcoma. (a) showed ulcerated neoplasm with the proliferation of atypical stromal elements, numerous atypical and roundish mitosis, eosinophilic cytoplasm, nucleus polymorph and numerous giant cells (H&E10x). (b) CD68, (c) desmin, (d) vimentin, (e) smooth muscle actin, and (f) CD34 x 40
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F2
Histopathological findings showed ulcerated neoplasm with the proliferation of atypical stromal elements, numerous atypical and roundish mitoses, eosinophilic cytoplasm, nucleus polymorph and numerous giant cells [Figure 2a]. The tumour was completely negative for HMB 45 and desmin [Figure 2b-f].
The appearance of the lesion on the scalp after (a) 10 days and (b) 45 days of surgical excision
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F3
It was observed that the lesion on the scalp healed by leaving only a light brown thin crust [Figure 3a and b].