Table 2 Inconclusive Trans-scleral Essen Forceps biopsies (TSEB).

From: Posterior uveal biopsy and the trans-scleral Essen forceps biopsy technique

Patient number

Lesion location

Lesion thickness (mm)

Max lesion diameter (mm)

Reason for biopsy failure

Repeat biopsy?

Ultimate Diagnosis

Treatment

1

Anterior, inferotemporal quadrant

2.8

6.3

Inconclusive. Bland melanocytic proliferation

No

Presumed ciliary body melanoma

Plaque brachytherapy

2

Anterior, superonasal quadrant

9.5

16.5

Inconclusive, melanomacrophages biopsied only

PLSU

Confirmed choroidal melanoma

Enucleation

3

Anterior, inferonasal quadrant

5.7

13.2

Sample dropped -Surface epithelial contamination and no uveal tissue received.

No

Presumed metastases from disseminated renal cell carcinoma.

Observation

  1. Clinical features and results of patients undergoing TSEB between August 2021 and March 2023 who had an inconclusive initial biopsy. Data were collected retrospectively from medical and histopathological records. Three patients had inconclusive biopsies with one requiring repeat biopsy.
  2. Anterior anterior to the equator of the globe
  3. PLSU partial lamellar sclerouvectomy